as引导让步状语从句时,必须进行倒装,倒装规则如下:1.表语+as+主语+系动词;2.状语+as+主语+谓语动词;3.动词原形+as+主语+其他。
一、表语+as+主语+系动词
【规则】
①表语通常可以由形容词、分词(现在分词和过去分词)、名词充当。
②名词做表语时,前面不加冠词(a/an/the)。
【例句】
①Young as he is, he is equal to the task.(表语为形容词young)
though/although he is young
尽管他年轻,但是却能胜任这份工作。
②Raining hard as it is, he is going out for a walk.(表语为现在分词raining)
though/although it is raining
虽然正在下着大雨,他还是要出去散步。
现在分词除了连系动词作表语的情况外,若是实意动词,需要在主语后面加助动词do/does/did。
例:Standing as it does at the top of the hill, the temple is well preserved.(现在分词standing提前,主语it后面加助动词does)
though/although it stands at the top of the hill
这座寺庙虽然在山顶,但却保存得很好。
③Crowded as the restaurant was,they tried to find a table.(表语为过去分词crowded)
though/although the restaurant was crowded
尽管饭店挤满了人,但是他们还是试着去找座位。
④Child as he is, he knows to help others. (表语为名词child)
though/although he is a child
他虽然是个孩子,却知道帮助别人。
二、状语+as+主语+谓语动词
【规则】
①状语通常由副词充当。
②谓语动词一般是行为动词(表示动作的动词,分为及物和不及物动词)。
【例句】
①Hard as he studied, he did not get good marks in the exam.
though/although he studied hard
尽管他学习很努力,但是在考试中还是没取得好成绩。
②Fast as you read, you can finish the book in two days.
though/although you read fast
即使你读得很快,但也不可能在两天看完这本书。
三、动词原形+as+主语+...
【规则】
①若从句中有情态动词may,might,will,would,can,could等,直接把动词原形提到句首。
②若从句中没有情态动词,把动词原形提到句首,在从句的主语之后(根据时态和数要求)加助动词do,does,did。
③放在句首的动词如果是及物动词,这个动词连同它的宾语一起放到as之前。
【例句】
①Try as he might, he couldn solve the problem. (从句中有情态动词might,动词原形try直接提前)
though/although he might try
尽管他想方设法,却未解决这个问题。
②Fail as he did, he would never give up.(没有情态动词,动词原形fail提前,从句中主语he后面加助动词did)
though/although he failed
虽然他失败了,但是他从不放弃。
③Lose money as I did, I got a lot of experience.(lose作及物动词,连同其宾语money一起放到as之前)
though/although I lost money
虽然我丢了钱,但是却长了经验。