Para dizer que duas coisas são iguais de algum jeito, coloque a palavra descritiva entre dois as: as + palavra + as. A palavra fica no formato simples, sem -er.
as + palavra + as
Amina is as tall as Lars.
This book is as interesting as that one.
Hiroshi runs as fast as his brother.
My bag is as heavy as yours.
Not "Amina is as taller as Lars." — say "Amina is as tall as Lars.". Dentro de as ... as, a palavra fica simples: as tall as, não "as taller as".
Experimente: Hiroshi runs ___ his brother. (as fast as / as faster as / as fast than) Resposta: as fast as — A palavra do meio fica simples: as fast as (não "as faster as"). E os dois lados são as, então o segundo também é as, não "than": as fast as his brother.
not as ... as
Para dizer que uma coisa é menos do que outra, adicione not: not as + palavra + as.
She is not as tall as her sister. (= shorter)
Today isn't as cold as yesterday. (= warmer)
This café isn't as busy as the one downtown.
Experimente: Today isn't ___ yesterday. It's warmer. (as cold as / as colder as / as cold than) Resposta: as cold as — Mantenha o mesmo as ... as, só adicione o not ("isn't"): isn't as cold as yesterday. A palavra fica simples (não "colder"), e os dois lados são as, então o segundo também é as, não "than".
as ... as, ou -er than?
Antes de escolher, pergunte: são iguais, ou um tem mais?Iguais → as + palavra simples + as. Um tem mais → -er / more ... than. Um tem menos → not as ... as.
The same: Amina is as tall as Lars. (they measure the same)
One is more: Amina is taller than Lars.
One is less: Amina is not as tall as Lars. (= she is shorter)
Watch the word: it stays plain inside as ... as (as tall as), but takes -er with than (taller than).
Not "Amina is as tall than Lars." — say "Amina is as tall as Lars. / Amina is taller than Lars.". as anda com as, e -er anda com than. Não misture os dois.
Experimente: Mei e Sofia têm as duas exatamente 1,65 m de altura. Nenhuma é mais alta que a outra. Qual serve para duas coisas que medem o mesmo? (Mei is as tall as Sofia. / Mei is taller than Sofia.) Resposta: Mei is as tall as Sofia. — Elas medem o mesmo, então use as + a palavra simples + as: as tall as. "Taller than" diria que uma tem mais, mas nenhuma tem.
Experimente: My phone is ___ yours, but it isn't ___ that new one. (as new as … as expensive as / as newer as … as expensive than / as new than … as expensive as) Resposta: as new as … as expensive as — Os dois espaços seguem o mesmo padrão: as + palavra simples + as. Então as new as e as expensive as. Mantenha a palavra simples e os dois lados as, tanto na afirmativa quanto depois de "isn't".