1）在否定句或疑问句中可用soas。
Hecannotrunso/asfastasyou.
2）当asas中间有名词时采用以下格式。
as 形容词 a 单数名词
as many/much 名词
Thisisasgoodanexampleastheotheris.
Icancarryasmuchpaperasyoucan..
3）用表示倍数的词或其他程度副词做修饰语时，放在as的前面。
Thisroomistwiceasbigasthatone.
Yourroomisthesamesizeasmine.
4）倍数 as adj. as=倍数 then of
Thisbridgeisthreetimesaslongasthatone.
Thisbridgeisthreetimesthelengthofthatone.
Yourroomistwiceaslargeasmine.
Yourroomistwicethesizeofmine.
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