Adverb
An Adverb is a word that modifies or gives additional information about a verb, adjective, another adverb, or sometimes an entire sentence.
Examples:
- She sings beautifully.
- beautifully modifies the verb sings.
- He is very intelligent.
- very modifies the adjective intelligent.
- The car moved extremely slowly.
- extremely modifies the adverb slowly.
- Fortunately, nobody was injured.
- fortunately comments on the entire sentence.
Adverbs commonly answer questions such as:
- How? → slowly, carefully, beautifully
- When? → now, yesterday, soon
- Where? → here, there, outside
- How often? → always, often, never
- To what extent? → very, quite, almost, completely
Adverbs are especially important in competitive examinations because questions frequently test adverb placement, adjective–adverb distinction, degree words, frequency adverbs, confusing word pairs, and incorrect adverb forms.
Table of Contents
ToggleTypes of Adverbs
Adverbs can be classified according to the kind of information they provide.
Important types include:
- Adverbs of Manner
- Adverbs of Place
- Adverbs of Time
- Adverbs of Frequency
- Adverbs of Degree
- Adverbs of Affirmation and Negation
- Adverbs of Reason/Result
- Interrogative Adverbs
- Relative Adverbs
- Sentence Adverbs
- Focusing Adverbs
Adverbs of Manner
An Adverb of Manner tells us how an action is performed.
Examples:
- slowly
- quickly
- carefully
- beautifully
- politely
- bravely
- silently
- honestly
Sentences:
- She spoke politely.
- The soldiers fought bravely.
- Rahul completed the work carefully.
- The child slept peacefully.
Question answered:
How?
Example:
How did she speak?
→ Politely.
Many adverbs of manner end in -ly, but not all adverbs do.
Adverbs of Place
An Adverb of Place tells us where an action occurs.
Examples:
- here
- there
- everywhere
- somewhere
- nowhere
- outside
- inside
- upstairs
- downstairs
- abroad
- away
- nearby
Sentences:
- Come here.
- The children are playing outside.
- I looked everywhere.
- She went abroad for higher studies.
Question answered:
Where?
Adverbs of Time
An Adverb of Time tells us when an action occurs.
Examples:
- now
- then
- today
- yesterday
- tomorrow
- soon
- later
- recently
- already
- yet
- immediately
Sentences:
- I met him yesterday.
- She will arrive tomorrow.
- We should leave now.
- He has already completed the work.
Question answered:
When?
Adverbs of Frequency
An Adverb of Frequency tells us how often an action occurs.
Examples:
- always
- usually
- normally
- generally
- often
- frequently
- sometimes
- occasionally
- rarely
- seldom
- hardly ever
- never
Examples:
- She always arrives on time.
- I often read newspapers.
- They sometimes visit us.
- He never smokes.
Question answered:
How often?
Adverbs of frequency can roughly be understood on a scale:
| Frequency | Adverb |
|---|---|
| 100% | always |
| Very frequent | usually |
| Frequent | often/frequently |
| Occasional | sometimes/occasionally |
| Infrequent | rarely/seldom |
| 0% | never |
The percentages are only approximate; the words do not represent mathematically fixed frequencies.
Adverbs of Degree
An Adverb of Degree indicates the intensity, extent or degree of an action, adjective or another adverb.
Examples:
- very
- too
- quite
- rather
- almost
- nearly
- extremely
- completely
- absolutely
- fairly
- enough
- hardly
- scarcely
Examples:
- She is very intelligent.
- The water is too hot.
- He runs extremely fast.
- I have almost finished.
- The bottle is nearly empty.
Question answered:
To what extent?
Very vs Too
Very intensifies a quality.
Example:
The water is very hot.
This simply means the temperature is high.
Too normally means more than necessary or desirable.
Example:
The water is too hot to drink.
Meaning:
It is so hot that drinking it is difficult or impossible.
Therefore:
- very difficult → highly difficult
- too difficult → excessively difficult for a particular purpose
Fairly vs Rather
Both can modify adjectives and adverbs.
Fairly often expresses a moderate degree.
Example:
The examination was fairly easy.
Rather often expresses a somewhat stronger or sometimes unexpected degree.
Example:
The examination was rather difficult.
The exact difference depends on context and tone.
Adverbs of Affirmation and Negation
These adverbs express agreement, certainty, affirmation or denial.
Examples:
- certainly
- surely
- definitely
- indeed
- yes
- no
- not
- never
Sentences:
- She will certainly succeed.
- He is definitely coming.
- I do not agree.
- He has never visited Delhi.
Adverbs of Reason or Result
Certain adverbs connect an idea with its result or consequence.
Examples:
- therefore
- hence
- consequently
- thus
Examples:
- He was ill; therefore, he stayed at home.
- The road was blocked; hence, we took another route.
- It rained heavily; consequently, the match was cancelled.
These words often function as conjunctive adverbs connecting ideas across clauses or sentences.
Interrogative Adverbs
Interrogative Adverbs are used to ask questions.
Important examples:
- when
- where
- why
- how
Examples:
- When will you arrive?
- Where do you live?
- Why are you crying?
- How did you solve the problem?
They ask about:
- when → time
- where → place
- why → reason
- how → manner
Relative Adverbs
The words when, where and why may introduce relative clauses.
Examples:
I remember the day when we first met.
This is the house where I was born.
Tell me the reason why you were absent.
Here:
- when → relates to day
- where → relates to house
- why → relates to reason
Sentence Adverbs
A Sentence Adverb comments on the entire statement rather than merely modifying one verb.
Examples:
- fortunately
- unfortunately
- probably
- obviously
- apparently
- frankly
- honestly
- surprisingly
- certainly
Examples:
Fortunately, everyone escaped safely.
Obviously, something is wrong.
Perhaps, he has forgotten the meeting.
The adverb expresses the speaker’s attitude, judgement or viewpoint toward the whole statement.
Focusing Adverbs
Focusing adverbs draw attention to a particular part of a sentence.
Important examples:
- only
- even
- just
- merely
- mainly
- particularly
- especially
Examples:
Only Rahul passed the test.
Meaning:
Nobody except Rahul passed.
Rahul only passed the test.
Depending on context, this may suggest that Rahul merely passed and did nothing beyond that.
The position of focusing adverbs can therefore change the meaning of a sentence.
Formation of Adverbs
Many adverbs are formed from adjectives, but English does not follow a single rule in every case.
Adjective + -ly
Many adverbs of manner are formed by adding -ly to an adjective.
| Adjective | Adverb |
|---|---|
| slow | slowly |
| quick | quickly |
| careful | carefully |
| beautiful | beautifully |
| polite | politely |
| brave | bravely |
| honest | honestly |
| quiet | quietly |
Examples:
- She is a careful driver.
- She drives carefully.
- He is a slow reader.
- He reads slowly.
Adjectives Ending in -y
When an adjective ends in consonant + y, the y usually changes to i before adding -ly.
Examples:
- happy → happily
- easy → easily
- angry → angrily
- heavy → heavily
- noisy → noisily
Example:
The children played happily.
Adjectives Ending in -le
Many adjectives ending in -le drop the final e and take -y.
Examples:
- simple → simply
- gentle → gently
- possible → possibly
- terrible → terribly
- comfortable → comfortably
Adjectives Ending in -ic
Many adjectives ending in -ic form adverbs by adding -ally.
Examples:
- basic → basically
- automatic → automatically
- dramatic → dramatically
- scientific → scientifically
- systematic → systematically
Important exception:
public → publicly
not normally:
publically ✘
Adjectives Ending in -ll
Usually add -y.
Example:
- full → fully
Notice the spelling:
fully, not fullly.
Adjective and Adverb Having the Same Form
Some words function as both adjectives and adverbs without adding -ly.
Important examples:
- fast
- hard
- early
- late
- straight
- daily
- weekly
- monthly
- yearly
Examples:
He is a fast runner.
- fast → Adjective
He runs fast.
- fast → Adverb
Another example:
She is a hard worker.
- hard → Adjective
She works hard.
- hard → Adverb
Do not say:
He runs fastly. ✘
Correct:
He runs fast. ✔
Words Ending in -ly That Are Adjectives
Not every word ending in -ly is an adverb.
Important adjectives include:
- friendly
- lovely
- lively
- lonely
- elderly
- silly
- ugly
- costly
- likely
Examples:
- a friendly teacher
- a lovely place
- a lonely child
- an elderly man
Incorrect:
He behaved friendly. ✘ in standard formal usage
Better:
He behaved in a friendly manner. ✔
Adverbs Not Derived from Adjectives
Many common adverbs do not end in -ly.
Examples:
- very
- too
- quite
- often
- never
- always
- here
- there
- now
- soon
- well
- almost
Therefore, it is incorrect to assume that all adverbs end in -ly.
Good and Well
Good is normally an adjective.
Example:
She is a good singer.
Well is normally the corresponding adverb.
Example:
She sings well.
But well can also function as an adjective meaning healthy.
Example:
I am well today.
Position of Adverbs
The position of an adverb depends largely on its type, meaning and the word it modifies.
Adverbs may appear at:
- the beginning
- the middle
- the end
of a sentence.
Position of Adverbs of Manner
Adverbs of manner commonly appear after the verb or after the object.
Examples:
She sang beautifully.
He completed the work carefully.
When the verb has an object, avoid placing the adverb awkwardly between the verb and its object.
Less natural:
She speaks fluently English. ✘
Better:
She speaks English fluently. ✔
Position of Adverbs of Place
Adverbs of place commonly occur after the verb or object.
Examples:
- Come here.
- She looked everywhere.
- They are playing outside.
- Put the bag there.
Position of Adverbs of Time
Adverbs of definite time frequently appear at the end or sometimes the beginning of a sentence.
Examples:
I met him yesterday.
Yesterday, I met him.
She will arrive tomorrow.
Position of Adverbs of Frequency
Adverbs such as:
- always
- usually
- often
- sometimes
- rarely
- seldom
- never
usually appear before the main verb.
Examples:
- I always wake up early.
- She often visits us.
- He never drinks coffee.
But with the verb be, they normally come after be.
Examples:
- He is always punctual.
- She was never rude.
- They are usually busy.
Therefore:
Before ordinary main verb
→ She often visits us.
After be
→ She is often busy.
Frequency Adverbs with Auxiliary Verbs
When there is an auxiliary verb, the frequency adverb usually comes after the first auxiliary.
Examples:
- She has always worked hard.
- He can never understand this.
- They have often visited Delhi.
Position of Adverbs of Degree
Adverbs of degree generally appear before the adjective or adverb they modify.
Examples:
- very beautiful
- extremely difficult
- quite slowly
- almost impossible
Examples in sentences:
- She is very intelligent.
- The examination was extremely difficult.
- He drove quite slowly.
Position of Enough
Enough has a special position.
Before a noun:
enough + noun
Examples:
- enough money
- enough time
- enough books
After an adjective or adverb:
adjective/adverb + enough
Examples:
- strong enough
- tall enough
- quickly enough
Correct:
He is strong enough to lift the box.
Incorrect:
He is enough strong to lift the box. ✘
Position of Only
The position of only is important because it can change meaning.
Compare:
Only Rahul answered the question.
→ Nobody except Rahul answered.
Rahul only answered the question.
→ Rahul merely answered; he did nothing more.
Rahul answered only one question.
→ He answered one question and no more.
For clear writing, place only immediately before the word or phrase it is intended to limit.
Order of Manner, Place and Time
When several adverbials occur together, a common neutral order is:
Manner → Place → Time
Example:
She sang beautifully at the concert yesterday.
- beautifully → Manner
- at the concert → Place
- yesterday → Time
Another example:
He worked quietly in his room all night.
This is a useful general pattern, though actual word order may change for emphasis, style or context.
Negative Adverbs at the Beginning
Certain negative or restrictive adverbs can cause subject–auxiliary inversion when placed at the beginning of a sentence.
Important examples:
- never
- rarely
- seldom
- hardly
- scarcely
- little
- nowhere
- not only
Normal:
I have never seen such a beautiful place.
Fronted:
Never have I seen such a beautiful place.
Normal:
She rarely visits us.
Fronted:
Rarely does she visit us.
Incorrect:
Never I have seen such a place. ✘
Correct:
Never have I seen such a place. ✔
Hardly/Scarcely…When
Common structures include:
Hardly/Scarcely + had + Subject + V3 + when + Simple Past
Example:
Hardly had I reached the station when the train arrived.
Similarly:
Scarcely had he entered the room when the phone rang.
No Sooner…Than
Use:
No sooner…than
Example:
No sooner had I reached the station than the train arrived.
Remember:
- Hardly → when
- Scarcely → when
- No sooner → than
Adjective vs Adverb
The distinction between Adjectives and Adverbs is extremely important.
An Adjective generally modifies:
- a noun
- a pronoun
An Adverb generally modifies:
- a verb
- an adjective
- another adverb
- sometimes an entire sentence
Compare:
She is a careful driver.
- careful → Adjective
- modifies driver
She drives carefully.
- carefully → Adverb
- modifies drives
Adjective after Linking Verbs
After a linking verb, we generally use an adjective to describe the subject.
Common linking verbs include:
- be
- seem
- appear
- become
- look
- feel
- smell
- taste
- sound
- remain
Examples:
- She looks beautiful.
- The food tastes delicious.
- He feels bad.
- The flowers smell sweet.
- The idea sounds interesting.
Incorrect:
She looks beautifully. ✘ if describing her appearance
Correct:
She looks beautiful. ✔
However:
She looked carefully at the document.
Here, looked means directed her eyes, an action, so carefully correctly modifies the verb.
Good vs Well
Compare:
He is a good player.
- good → Adjective
He plays well.
- well → Adverb
Also:
He is well.
Here, well is an adjective meaning healthy.
Hard vs Hardly
These words have very different meanings.
Hard as an adverb means:
with great effort / intensely
Example:
He works hard.
Hardly means:
almost not / scarcely
Example:
He hardly works.
Compare:
- He works hard.
- He works with great effort.
- He hardly works.
- He does almost no work.
Late vs Lately
Late means after the expected or usual time.
Example:
He arrived late.
Lately means recently.
Example:
I have not seen him lately.
Near vs Nearly
Near means close.
Example:
Come near.
Nearly means almost.
Example:
The work is nearly complete.
High vs Highly
High can refer to physical height or level.
Example:
The bird flew high.
Highly commonly means very much / greatly / to a high degree, often in a figurative sense.
Examples:
- a highly respected teacher
- a highly successful project
Compare:
- The plane flew high.
- She is highly respected.
Deep vs Deeply
Deep often refers to physical depth.
Example:
They dug deep into the ground.
Deeply is often used figuratively or emotionally.
Examples:
- deeply concerned
- deeply disappointed
- deeply affected
Compare:
- Dig deep.
- I was deeply moved.
Wide vs Widely
Wide can refer to physical width or extent.
Example:
Open your mouth wide.
Widely commonly means extensively / by many people / over a large area.
Examples:
- The idea is widely accepted.
- English is widely spoken.
Close vs Closely
Close means near.
Example:
Come close.
Closely often means carefully or attentively.
Example:
Watch the experiment closely.
Free vs Freely
Free as an adverb can mean without payment in certain expressions.
Example:
Children under five travel free.
Freely means without restriction or hesitation.
Example:
You may speak freely.
Direct vs Directly
Direct can mean without interruption or intermediate stop.
Example:
We flew direct to Delhi.
Directly often means:
- in a direct manner
- immediately, in some varieties of English
Example:
Speak directly to the manager.
Short vs Shortly
Short can mean suddenly or before a target in certain contexts.
Example:
The ball fell short.
Shortly generally means soon.
Example:
The meeting will begin shortly.
Pretty
Pretty can be an adjective meaning attractive.
Example:
She wore a pretty dress.
It can also be an informal adverb meaning fairly or quite.
Example:
The examination was pretty difficult.
Its function depends on context.
Common Errors
Errors involving adverbs often occur because of wrong formation, wrong position, adjective–adverb confusion or words with similar forms but different meanings.
Using an Adjective Instead of an Adverb
Incorrect:
He runs quick. ✘
Correct:
He runs quickly. ✔
Incorrect:
She answered polite. ✘
Correct:
She answered politely. ✔
The words modify action verbs and therefore normally require adverbs.
Using an Adverb after a Linking Verb
Incorrect:
The flower smells sweetly. ✘ when describing the flower’s smell
Correct:
The flower smells sweet. ✔
Incorrect:
She looks beautifully. ✘ when describing her appearance
Correct:
She looks beautiful. ✔
After a linking verb, use an adjective when the word describes the subject.
Good vs Well
Incorrect:
She sings good. ✘
Correct:
She sings well. ✔
But:
She is a good singer. ✔
Hard vs Hardly
Incorrect interpretation:
He hardly works.
This does not mean that he works with great effort.
It means:
He almost does not work.
For effort:
He works hard.
Late vs Lately
Incorrect:
I have not met him late. ✘ if the intended meaning is recently
Correct:
I have not met him lately. ✔
But:
He arrived late. ✔
Very vs Too
Compare:
The box is very heavy.
→ It has considerable weight.
The box is too heavy for me to lift.
→ Its weight exceeds what I can manage.
Do not treat very and too as exact synonyms.
Enough Position
Incorrect:
He is enough intelligent to understand this. ✘
Correct:
He is intelligent enough to understand this. ✔
But with a noun:
He has enough intelligence to understand this. ✔
Remember:
- enough + noun
- adjective/adverb + enough
Very Much with Verbs
Very normally modifies adjectives and adverbs, while very much can modify many verbs.
Correct:
I like this book very much.
Not normally:
I very like this book. ✘
Correct:
She is very intelligent.
Much with Comparatives
Comparative adjectives and adverbs can be strengthened by:
- much
- far
- a lot
- considerably
- slightly
- a little
Examples:
- much better
- far more useful
- considerably faster
- slightly cheaper
Incorrect:
He is very taller than me. ✘
Correct:
He is much taller than me. ✔
Too Much vs Much Too
These expressions are frequently confused.
Too much + uncountable noun
Examples:
- too much water
- too much sugar
- too much money
Much too + adjective/adverb
Examples:
- much too expensive
- much too difficult
- much too slowly
Compare:
There is too much sugar in the tea.
The tea is much too sweet.
Too Many
Use too many with plural countable nouns.
Examples:
- too many students
- too many books
- too many mistakes
Incorrect:
too much students ✘
Correct:
too many students ✔
Seldom or Never
Avoid unnecessary double expressions such as:
He seldom or never visits us.
Traditional exam grammar may prefer:
He seldom, if ever, visits us.
or simply:
He seldom visits us.
Double Negatives
Words such as:
- hardly
- scarcely
- barely
- rarely
- seldom
- never
already carry a negative or near-negative meaning.
Avoid adding another unnecessary negative.
Incorrect:
I could not hardly hear him. ✘
Correct:
I could hardly hear him. ✔
Incorrect:
He never says nothing. ✘ in standard formal English
Correct:
He never says anything. ✔
or
He says nothing. ✔
Hardly/Scarcely with When
Correct:
Hardly had I reached the station when the train arrived.
Correct:
Scarcely had she entered the room when the phone rang.
For competitive examinations, remember:
- hardly…when
- scarcely…when
No Sooner with Than
Incorrect:
No sooner had I arrived when it started raining. ✘
Correct:
No sooner had I arrived than it started raining. ✔
Remember:
No sooner…than
Placement of Frequency Adverbs
Incorrect:
He goes always to school on time. ✘ in neutral word order
Better:
He always goes to school on time. ✔
With be:
Correct:
He is always punctual.
Not normally:
He always is punctual. ✘ in neutral usage
Placement of Only
Poor placement can create ambiguity.
Consider:
I only gave Rahul ₹500.
Depending on context, this may be ambiguous.
If the intended meaning is that the amount was limited:
I gave Rahul only ₹500.
If Rahul alone received it:
I gave only Rahul ₹500.
For formal writing, position only close to the word or phrase it modifies.
Adverb between Verb and Object
Awkward/incorrect in ordinary usage:
She speaks fluently English. ✘
Correct:
She speaks English fluently. ✔
Similarly:
He completed the work carefully.
rather than:
He completed carefully the work. in ordinary neutral English.
Fast vs Fastly
Incorrect:
He runs fastly. ✘
Correct:
He runs fast. ✔
Fast functions as both an adjective and an adverb.
Friendly
Incorrect:
She spoke friendly. ✘
Better:
She spoke in a friendly manner. ✔
Friendly is normally an adjective despite ending in -ly.
Most vs Mostly
Most can mean the greatest amount/number or, before a plural/uncountable noun, the majority of.
Example:
Most students passed.
Mostly means mainly / generally / for the most part.
Example:
The audience consisted mostly of students.
Do not use the two indiscriminately.
Sometimes vs Sometime vs Some Time
These are commonly confused.
Sometimes
→ occasionally
Example:
I sometimes walk to work.
Sometime
→ at an unspecified time
Example:
Come and visit me sometime.
Some time
→ a period of time
Example:
It will take some time to finish the work.
Already vs All Ready
Already
→ before now / sooner than expected
Example:
She has already left.
All ready
→ completely prepared
Example:
We are all ready to leave.
Altogether vs All Together
Altogether
→ completely / in total
Example:
The plan was altogether unsuccessful.
All together
→ everyone or everything together
Example:
The students stood all together.
Everyday vs Every Day
Although everyday is actually an adjective rather than an adverb, this distinction is frequently tested.
Everyday
→ ordinary/common; adjective
Example:
These are everyday problems.
Every day
→ each day; adverbial expression
Example:
I exercise every day.
Revision Table
| Type of Adverb | Question/Function | Examples |
|---|---|---|
| Manner | How? | slowly, carefully |
| Place | Where? | here, outside |
| Time | When? | now, yesterday |
| Frequency | How often? | always, often |
| Degree | To what extent? | very, almost |
| Affirmation | Certainty/agreement | certainly, definitely |
| Negation | Denial/negative meaning | not, never |
| Result | Consequence | therefore, consequently |
| Interrogative | Asks a question | when, where, why, how |
| Relative | Introduces relative clause | when, where, why |
| Sentence Adverb | Comments on sentence | fortunately, obviously |
| Focusing | Limits/emphasises | only, even, just |
Important Adjective–Adverb Pairs
| Adjective | Adverb |
|---|---|
| careful | carefully |
| slow | slowly |
| quick | quickly |
| beautiful | beautifully |
| happy | happily |
| easy | easily |
| simple | simply |
| automatic | automatically |
| good | well |
| fast | fast |
| hard | hard |
| early | early |
| late | late |
Important Confusing Adverbs
| Word | Meaning |
|---|---|
| hard | with great effort |
| hardly | almost not |
| late | after expected time |
| lately | recently |
| near | close |
| nearly | almost |
| high | at/to a high level |
| highly | greatly/very much |
| deep | to a great physical depth |
| deeply | intensely/profoundly |
| wide | to full width |
| widely | extensively |
| close | near |
| closely | carefully/attentively |
| free | without payment |
| freely | without restriction |
| short | not far enough / abruptly in some contexts |
| shortly | soon |
Most Important Rules to Remember
- An adverb can modify:
- a verb
- an adjective
- another adverb
- sometimes an entire sentence
- Adverbs commonly express:
- manner
- place
- time
- frequency
- degree
Many adverbs are formed by:
Adjective + -ly
- slow → slowly
- careful → carefully
- beautiful → beautifully
- Not every adverb ends in -ly:
- fast
- hard
- often
- never
- well
- Not every -ly word is an adverb:
- friendly
- lovely
- lonely
- lively
- elderly
- Adverbs of frequency normally occur:
- before an ordinary main verb
- She always works hard.
- after be
- She is always punctual.
- after the first auxiliary
- She has always worked hard.
- before an ordinary main verb
- Adverbs of manner commonly occur after the verb or object:
- She sings beautifully.
- She speaks English fluently.
- Adverbs of degree normally occur before the adjective/adverb:
- very intelligent
- extremely slowly
- Remember the special position of enough:
- enough + noun
- enough money
- adjective/adverb + enough
- strong enough
- quickly enough
- enough + noun
- After linking verbs, use an adjective when describing the subject:
- She looks beautiful.
- The soup tastes good.
- Remember:
- good → adjective
- well → normally adverb
- Do not confuse:
- hard = with effort
- hardly = almost not
- late = after the expected time
- lately = recently
- near = close
- nearly = almost
- high = physical level
- highly = greatly
- Very and too are not identical:
- very hot → high degree
- too hot → excessively hot
- Use:
- too much + uncountable noun
- too many + plural countable noun
- much too + adjective/adverb
- Negative adverbs at the beginning may require inversion:
- Never have I seen…
- Rarely does he visit…
- Remember the examination patterns:
- Hardly/Scarcely…when
- No sooner…than
- Avoid double negatives:
- I could hardly hear. ✔
- I could not hardly hear. ✘
- Position only carefully because changing its position can change the meaning of the sentence.
A strong understanding of adverbs is essential for sentence correction, error detection, cloze tests, adjective–adverb distinction, comparison, inversion and sentence transformation.
