as 引導(dǎo)讓步狀語(yǔ)從句時(shí),一般須用部分倒裝.如：
Old as he is,he works like a young man.盡管他很老了,但他工作起來(lái)卻像個(gè)年輕人.
Hard as he was working,he didn’t pass the exam.雖然他一直在努力學(xué)習(xí),但他還是沒(méi)有通過(guò)那次考試.
Try again as he will,he can’t succeed.盡管他還會(huì)再試一試,但是它不會(huì)成功.
as 引起的倒裝分三種情況：表語(yǔ)、動(dòng)詞原形及狀語(yǔ)的倒裝.
1.表語(yǔ)的倒裝
一般直接將表語(yǔ)提前到句首,若表語(yǔ)是帶不定冠詞a / an的單數(shù)可數(shù)名詞,倒裝后,不定冠詞a / an須被省略.如：
Fine as he looks,he is ill with some serious diseases.
Child as he is,he knows much about the society.
2.原形動(dòng)詞的倒裝
A.動(dòng)詞前面帶有情態(tài)動(dòng)詞may,might,will,would,can,could等時(shí),只將行為動(dòng)詞提到句首,而這些情態(tài)動(dòng)詞保留在原處.
B.若動(dòng)詞前面沒(méi)有情態(tài)動(dòng)詞時(shí),應(yīng)在動(dòng)詞原來(lái)的位置加上助動(dòng)詞do的適當(dāng)形式.
C.用于這一句型的動(dòng)詞一般是不及物動(dòng)詞,而不能是系動(dòng)詞或及物動(dòng)詞.如：
Swim as he can,he can’t swim so far.盡管他會(huì)游泳,但是他游不得那么遠(yuǎn).
Run as he did,he didn’t run fast enough to catch the bus.雖然他跑,但是他跑得不夠快而沒(méi)有趕上汽車.
3.狀語(yǔ)倒裝
In the classroom as he stays,he doesn’t read his texts.盡管他呆在教室里,但他不讀書.
Carefully as he worked,he made some mistakes.盡管他工作很細(xì)心,但還是除了一些差錯(cuò).