English — Comparisons with as…as
To say two things are equal, English puts the adjective or adverb between two as: She is as tall as her brother. The negative not as … as shows they are not equal: This phone is not as expensive as that one.
How it works
The pattern is (not) as + adjective/adverb + as. Use as much/many … as for quantity (as much money as, as many friends as), and put twice or half before the first as to scale the comparison: This bag is twice as heavy as mine; My room is half as big as yours.
Examples
| Example | Meaning / use |
|---|---|
| She is as tall as her brother. | Equality with an adjective — the two are the same. |
| He runs as fast as I do. | Equality with an adverb — same manner or degree. |
| This phone is not as expensive as that one. | Negative — the first is less than the second. |
| I don't have as much time as you. | as much + uncountable noun — equal quantity. |
| She has as many books as I do. | as many + countable noun — equal number. |
| This bag is twice as heavy as mine. | twice before as — two times the amount. |
| My room is half as big as yours. | half before as — one part in two. |
Good to know
After as, use a subject pronoun with a verb (as tall as I am) or an object pronoun in everyday speech (as tall as me). Both are fine; only mix them up carefully — say as tall as me, not as tall as I, when no verb follows. Keep the adjective in its plain form: as tall as, never as taller as.