as as 句型是中学英语的重要句型，学习时要注意以下几点：
一、as as的基本用法
1) as + adj. / adv. + as 和……一样
2) as many / much as sb. want(s) 想要多少就有多少
3) as + adj. / adv. + as possible / as one can 尽可能……
4) as many / much / far, etc. + as + （数字） 多 / 远达……
5) percent as + adj. + as 是……的百分之……
6) half as + adj. + as 是……的一半
7) A is n times as as B. A是B的几倍…… / A比B大n?鄄1倍。
二、as as的固定用法
1) as long as 只要；达……之久
2) as far as 就……而言；远至……
3) as soon as 一……就……
4) as well as 和；除……之外；和……一样好
5) as good as 和……一样好；几乎；差不多
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