AS...AS COMPARISONS (A2 Grammar)

Use AS...AS to show two things are EQUAL. Use NOT AS...AS for inequality.

Quick tip: AS...AS = equal/same. NOT AS...AS = less than. Use BASE adjective, not comparative!

AS + adjective + AS (equal)

Two things are the same. The adjective doesn't change.

• She is as tall as me.
• This book is as interesting as that one.
• He runs as fast as his brother.
• My car is as expensive as yours.

NOT AS + adjective + AS (not equal)

One thing is LESS than the other. Softer than comparatives.

• She's not as tall as me. (= shorter)
• This isn't as expensive as that. (= cheaper)
• He doesn't run as fast as her. (= slower)
• Today isn't as cold as yesterday. (= warmer)

Common AS...AS expressions

Fixed expressions using the as...as pattern.

• as busy as a bee (very busy)
• as strong as an ox (very strong)
• as easy as pie (very easy)
• as clear as crystal (very clear)

Common mistakes

• Not "as taller as" — say "as tall as". Use base form, not comparative.
• Not "as fast than" — say "as fast as". Use AS...AS, not AS...THAN.

Practise it

Equal? = AS...AS. Not equal? = NOT AS...AS (or use comparative: taller than).