As...as: Comparing things as equals
Grammar Rule in 30 Seconds
Use 'as...as' to show that two things are the same in some way, like a mirror image.
- Use 'as + adjective + as' for equality: 'He is as tall as me.'
- Use 'not as + adjective + as' for inequality: 'It's not as cold as yesterday.'
- Never use comparative '-er' forms inside the sandwich: 'as fast as', not 'as faster as'.
Overview
Use as...as to say two things are the same.
This helps you describe things in a better way.
Put as before a word and as after it.
How This Grammar Works
more intelligent or less intelligent, but that their intelligence levels are equal.Formation Pattern
The new phone is as expensive as the old one. (Both phones cost the same amount.)
Her hair is as long as mine is. (Our hair has the same length.)
This task is as difficult as the last project was. (The difficulty levels are identical.)
He can run as fast as a professional athlete does. (His speed matches a professional's.)
They finished the work as quickly as their competitors did. (Their finishing speed was the same.)
as + [adj/adv] + as | She is as kind as her mother. | He drives as carefully as his wife. |
This coffee isn't as hot as I like it. (It's cooler than your preferred temperature.)
She doesn't speak French as fluently as her colleague does. (Her colleague is more fluent.)
The new laptop isn't as powerful as I expected. (It has less power than anticipated.)
The weather isn't so warm as it was yesterday. (Implying a noticeable drop in temperature.)
not so...as | More formal/emphatic; implies 'not nearly'. | The film wasn't so good as the book. | They don't earn so much as their rivals. |
as much as and as many as
I don't have as much time as you to complete this report.
She drinks as much water as her coach recommends.
He earns as much money as his business partner does.
There were as many students as chairs in the classroom.
My neighbor has as many cats as I have dogs.
We received as many complaints as compliments today.
as much as: Can also mean 'to the extent that' or introduce a concession. I love him as much as one can love. (extent) / As much as I'd like to help, I'm too busy. (concession).
as far as: Refers to distance or the extent of knowledge/opinion. We walked as far as the river. (distance) / As far as I know, he's at home. (extent of knowledge).
When To Use It
- Stating Perfect Similarity or Equivalence: This is the primary function. Use
as...asto emphasize that two items or individuals are identical in a specific attribute. For example,My new car is as reliable as my old one.means both cars have the same level of dependability. Similarly,She can cook as well as a professional chef.highlights an equal skill level in cooking.
- Expressing Inequality Indirectly: The
not as...asconstruction politely communicates that the first item possesses a quality to a lesser degree than the second. For instance,This phone isn't as fast as the latest model.effectively states that the latest model is faster without using the comparative adjectivefaster. This is a common and often softer way to express a difference, avoiding direct comparison.
- Setting Conditions or Limitations: The phrase
as long asfrequently introduces a necessary condition for something else to occur or be true.You can borrow my laptop as long as you promise to be careful with it.Here,promising to be carefulis the prerequisite. This usage is common in agreements, instructions, and personal arrangements.
- Specifying Maximum Degree or Effort: When combined with
possibleor a clause likeyou can/could,as...asemphasizes achieving the highest achievable level of a quality or action. For example,Please send the documents as soon as possible.(ASAP) requests the fastest possible action.Try to answer as accurately as you can.asks for the maximum possible accuracy. This is prevalent in professional settings and urgent requests.
- Indicating Unexpectedly Large Quantities: Used with
muchormany,as...ascan express surprise or emphasis at the extent of a quantity. For example,There were as many as fifty people waiting in line!conveys that the number of people was surprisingly high, adding an element of emphasis to the quantity. This is particularly common when the quantity exceeds expectations.
- Making Polite Suggestions or Softening Statements: In some contexts, particularly with negative forms,
as...ascan soften criticism or offer a gentler perspective.Perhaps the situation isn't as bad as it seems.is less direct thanThe situation isn't bad., allowing for a more open and less confrontational interpretation. This often reflects a cultural preference in English for indirectness in certain communications.
- Referring to the Extent of Knowledge or Opinion: Phrases like
as far as I knoworas far as I'm concernedindicate the speaker's limitations or scope regarding information or opinion.As far as the weather forecast goes, it will be sunny tomorrow.This is a useful conversational qualifier that limits the scope of one's statement to their current understanding.
Common Mistakes
- Missing the Second
as: This is perhaps the most frequent error. Theas...asconstruction is a correlative pair; both parts are essential for the comparison to be grammatically complete. Omitting the secondasleaves the comparison unfinished and often grammatically incorrect. - Incorrect:
My new car is as powerful my old one. - Correct:
My new car is as powerful as my old one. - Why it's wrong: Without the second
as, the sentence lacks the crucial element that introduces the second item of comparison, making the structure incomplete and ambiguous.
- Using Comparative Forms within
as...as: A common error is inserting comparative adjectives or adverbs (e.g.,-erormore) betweenas...as. The structure requires the base form of the adjective or adverb. - Incorrect:
She is as taller as her brother. - Incorrect:
He runs as more quickly as I do. - Correct:
She is as tall as her brother. - Correct:
He runs as quickly as I do. - Why it's wrong: The
as...asstructure already establishes the comparison of equality. Adding a comparative form (taller,more quickly) creates redundancy and incorrect grammar.
- Confusing
as...aswithlikeoras if/though: While all relate to comparison, they serve different functions.As...asindicates equality in degree,likeindicates similarity (often meaning 'similar to' or 'in the manner of'), andas if/thoughintroduce hypothetical comparisons or appearances. - Equality:
Your car is as red as mine.(Both cars are the same shade of red.) - Similarity:
She sings like a bird.(She sings in a way similar to a bird, not equally a bird.) - Hypothetical:
He acts as if he owns the place.(He acts in a way that suggests he owns it, but he doesn't.) - Why it's wrong: Misusing these implies a different type of comparison, leading to misunderstanding.
- Omitting the Verb/Subject in the Second Clause: While common in very casual speech when the context is clear, grammatically, the second clause in an
as...ascomparison should ideally include the verb or an auxiliary verb, or at least a subject pronoun. - Casual (often acceptable):
She is as tall as him. - Grammatically Standard:
She is as tall as he is.orShe is as tall as he.(Here,heis treated as a subject pronoun, implyinghe is.) - Why it's wrong: Omitting the verb can make the sentence less formal or, in some cases, slightly ambiguous, especially with pronouns.
- Incorrect Use of
soin Positive Comparisons: Remember thatsois typically reserved for negativenot so...asconstructions or for emphasizing a degree (e.g.,She is so beautiful.). It is generally not used in positiveas...ascomparisons. - Incorrect:
She is so tall as her sister. - Correct:
She is as tall as her sister. - Why it's wrong:
so...asfor positive equality is archaic or used in very specific literary contexts and sounds unnatural in modern English.
Real Conversations
Understanding how as...as functions in everyday communication helps you integrate it naturally into your English. It appears in casual chats, work emails, and even social media.
- Casual Conversation:
- `
2. Common Contractions with Negatives
| Full Form | Contraction | Usage |
|---|---|---|
|
is not as
|
isn't as
|
Singular subjects
|
|
are not as
|
aren't as
|
Plural subjects
|
|
was not as
|
wasn't as
|
Past singular
|
|
were not as
|
weren't as
|
Past plural
|
The As...As Structure
| Type | First Part | Middle (Adjective/Adverb) | Second Part | Example |
|---|---|---|---|---|
|
Affirmative
|
as
|
tall
|
as
|
as tall as
|
|
Negative
|
not as
|
expensive
|
as
|
not as expensive as
|
|
Adverb
|
as
|
quickly
|
as
|
as quickly as
|
|
Quantity (Countable)
|
as many
|
books
|
as
|
as many books as
|
|
Quantity (Uncountable)
|
as much
|
time
|
as
|
as much time as
|
|
Emphatic
|
just as
|
good
|
as
|
just as good as
|
Meanings
A grammatical structure used to compare two people, things, or situations to show they possess a quality in the same degree.
Equality of Quality
Showing two things have the same characteristic.
“She is as smart as her brother.”
“This cake is as delicious as the one my mom makes.”
Equality of Quantity
Using 'much' or 'many' to compare amounts.
“I have as many books as you.”
“He doesn't drink as much water as he should.”
Negative Comparison
Showing one thing has less of a quality than another.
“Running is not as fast as cycling.”
“The hotel wasn't as clean as we expected.”
Adverbial Equality
Comparing the way an action is performed.
“He can run as quickly as a professional athlete.”
“Please finish the report as soon as possible.”
Reference Table
| Form | Structure | Example |
|---|---|---|
|
Affirmative
|
as + adj + as
|
She is as kind as her mother.
|
|
Negative
|
not as + adj + as
|
It's not as cold as yesterday.
|
|
Question
|
Verb + S + as + adj + as...?
|
Is he as funny as he looks?
|
|
Adverbial
|
as + adv + as
|
He speaks as fast as a rapper.
|
|
Countable Quantity
|
as many + [plural noun] + as
|
I have as many shoes as you.
|
|
Uncountable Quantity
|
as much + [noun] + as
|
There isn't as much milk as I need.
|
|
Pronoun (Informal)
|
as + adj + as + [object pronoun]
|
You are as smart as him.
|
|
Pronoun (Formal)
|
as + adj + as + [subject pronoun] + [verb]
|
You are as smart as he is.
|
Formality Spectrum
He performs the task as efficiently as his predecessor. (Workplace performance)
He is as fast as the previous worker. (Workplace performance)
He's as quick as the last guy. (Workplace performance)
He's just as cracked as the other dude. (Workplace performance)
The As...As Equality Map
Adjectives
- as big as size
- as old as age
Adverbs
- as fast as speed
- as well as quality
Equality vs. Difference
Choosing the Right Comparison
Are they equal?
Is one less than the other?
Common As...As Idioms
Time
- • as soon as possible
- • as long as
- • as always
Similes
- • as brave as a lion
- • as quiet as a mouse
- • as busy as a bee
Examples by Level
He is as old as me.
The dog is as big as the cat.
Is it as hot as yesterday?
I am as happy as you.
This book isn't as interesting as the last one.
Can you run as fast as him?
My car is as old as yours.
The water is not as cold as I thought.
I don't earn as much money as my sister.
Please call me as soon as you arrive.
He speaks as clearly as a news reporter.
There aren't as many people here as last year.
The results were just as good as we had hoped.
It's not nearly as difficult as it looks.
She works twice as hard as her colleagues.
The new model is every bit as reliable as the old one.
The situation is not so much a crisis as a challenge.
As many as ten thousand protesters gathered in the square.
He was as much a philosopher as he was a scientist.
The film is as visually stunning as it is narratively weak.
As often as not, he forgets his keys when he leaves.
The project was as good as finished by the time I arrived.
He is as brave a man as ever lived.
As much as I admire his work, I cannot agree with his methods.
Easily Confused
Learners often mix the two because both are used for comparisons.
Choosing between countable and uncountable nouns.
Both can show similarity.
Common Mistakes
He is as tall than me.
He is as tall as me.
She is as taller as me.
She is as tall as me.
I am as big you.
I am as big as you.
It is as better as that.
It is as good as that.
I don't have as many money as him.
I don't have as much money as him.
He runs as quick as me.
He runs as quickly as me.
This is not so good as that.
This is not as good as that.
I have as many as five dollar.
I have as many as five dollars.
He is as tall as I.
He is as tall as me. (or) He is as tall as I am.
It's not as much a problem than a disaster.
It's not so much a problem as a disaster.
Sentence Patterns
I am as ___ as my ___.
This ___ isn't as ___ as that ___.
He can ___ as ___ as a ___.
Real World Usage
This camera isn't as good as the reviews said.
I am as experienced as the other candidates.
I'll be there as soon as I can!
Tomorrow won't be as sunny as today.
He's not as fast as he used to be.
The hotel was as nice as the pictures.
The ASAP Trick
No -er Allowed!
Polite Negatives
Similes
Smart Tips
Visualize a mirror. Whatever adjective you use to describe one, the other must reflect it exactly between the two 'as' words.
Use the negative 'not as...as' instead of a direct negative adjective.
Stop! If you are using 'as...as', remove the -er immediately.
Check if you can count the items on your fingers. If yes, use 'many'. If no, use 'much'.
Pronunciation
The Weak 'As'
In natural speech, the word 'as' is usually unstressed and sounds like /əz/ (rhymes with 'fuzz' but very short).
Equality Stress
He's as TALL as ME.
Stress the adjective and the final pronoun to emphasize the comparison.
Memorize It
Mnemonic
AS...AS is like a pair of glasses; you need both sides to see the equality clearly.
Visual Association
Imagine a sandwich where the two pieces of bread are the word 'AS' and the filling is the adjective. You can't have a sandwich with only one piece of bread!
Rhyme
Two 'as' in a row, make the equality show.
Story
Once there were two twins, Alex and Sam. Alex was as tall as Sam, as fast as Sam, and as kind as Sam. They lived in a house that was as big as a castle.
Word Web
Challenge
Look around your room. Find two objects and describe them using 'as...as' (e.g., 'My pen is as long as my phone'). Do this for 5 pairs of objects.
Cultural Notes
British speakers often use 'as...as' in traditional similes like 'as thick as two short planks' (meaning someone is not very smart).
In the US, 'as...as' is frequently used in business idioms like 'as of yet' or 'as per our conversation'.
Australians often shorten the structure in very casual speech, though the full 'as...as' remains the standard.
The word 'as' comes from the Old English 'alswā', which means 'all so' or 'entirely so'.
Conversation Starters
Is your hometown as big as the city you live in now?
Do you think learning English is as difficult as learning math?
Is your current job as stressful as your previous one?
Is the movie version of your favorite book as good as the original?
Journal Prompts
Common Mistakes
Test Yourself
She is as ___ (smart) as her sister.
Find and fix the mistake:
The blue car is as fast than the red car.
I don't have as ___ friends as you.
The train is faster than the bus.
We use 'as...as' to show that two things are different.
A: Is the exam hard? B: No, it's not ___ as last year.
Select the grammatically correct sentence.
Match each item on the left with its pair on the right:
Score: /8
Practice Exercises
8 exercisesShe is as ___ (smart) as her sister.
Find and fix the mistake:
The blue car is as fast than the red car.
I don't have as ___ friends as you.
The train is faster than the bus.
We use 'as...as' to show that two things are different.
A: Is the exam hard? B: No, it's not ___ as last year.
Select the grammatically correct sentence.
Match: 1. As busy as... 2. As quiet as... 3. As brave as...
Score: /8
Practice Bank
10 exercisesShe speaks English as ___ as a native speaker. (fluent)
The pizza was as better as I expected.
as / as / he / isn't / tall / brother / his
Es ist nicht so teuer wie ich dachte.
Match the pairs:
There aren't ___ people here as yesterday.
Please reply as soon ___ possible.
The movie was as long the book.
Ich renne so schnell wie du.
The hotel room ___ as nice as the photos.
Score: /10
FAQ (8)
In negative sentences, you can say `not so... as`, but it sounds more formal or old-fashioned. In affirmative sentences, you must use `as...as`.
In casual conversation, `as tall as me` is standard. In very formal writing, `as tall as I am` is preferred.
Yes! For example: 'He speaks as clearly as a teacher.' Just make sure to use the adverb form.
Use `as many as` for countable nouns (people, days) and `as much as` for uncountable nouns (water, love, money).
Yes, they have the same meaning, but `not as...as` is often considered more polite or descriptive.
Only in the negative form (`not as...as`). If they are equal, use the affirmative.
No, you should say `as well as` or `as good as`. Avoid using superlative forms like 'best' in this structure.
You can add `just` or `nearly`. For example: 'It's just as hot as yesterday' or 'It's nearly as big as a house.'
Scaffolded Practice
1
2
3
4
Mastery Progress
Needs Practice
Improving
Strong
Mastered
In Other Languages
tan... como
Spanish doesn't distinguish between 'as' and 'so' in this specific structure.
aussi... que
Learners often use 'than' in English because 'que' translates to both 'as' and 'than'.
so... wie
German speakers must remember not to use 'than' (als) for equality.
...to onaji kurai
The word order is completely different, with the comparison coming before the adjective.
mithla / ka-
Arabic often uses a 'like' structure rather than a double-particle 'as...as' structure.
hé... yīyàng
The structure literally translates to 'A with B same [adjective]'.
Learning Path
Prerequisites
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