2011高考英语二轮复习教案之inorderto与soasto等用法详析

in order to 与 so as to等用法详析

让我们先来看一下本单元的几个句子:

In order to survive, Chuck develops a friendship with a n unusual friend-a volleyball he calls Wilso n. 为了求生,查克交了一个不同寻常的朋友-- 一个被他叫作威尔逊的排球。

... who is al ways so busy that he has little time for his friends. 他总是很忙,以至于几乎没有时间交朋友。

这两句中,in order to +动词原形引导目的状语。so as to +动词原形,to+动词原形都可以引导目的状语。有时为了表示强调,也可以将in order to do, to do 等放在句首,而so as to do 一般不放在句首,也比较口语化。表达否定的目的时,可以用in order not to do和so as not to do 这两种结构。例:

In order to (=To) hear more clearly, we moved to the front row. 为了听得更清楚,我们挪到了前排。

He ran quickly in order not to (= so as not to) be late for the meeting. 他跑得很快,以便(为的是)不迟到。

so +adj. / adv. that可以引导结果状语从句,意思是"如此……以至于……",也可用于so + adj. + n.+that结构。例:

He ran so fast that nobody could catch up with him. 他跑得太快,没人能追得上他。

He drank so much Coke that he felt terrible. 他喝了那么多可乐,感觉很难受。

so that和in order that可以引导的目的状语从句与结果状语从句,引导目的状语从句时说明主语的行为目的,引导结果状语从句时多说明主句行为的结果。从结构上看前者多带有情态动词。请对比下列从句:

I'll keep the box in the shade so tha t the sun doesn't burn the little plants. 我把箱子放在树荫下,这样太阳就烤不坏植物。(结果状语从句)

They stayed in Hangzhou so that they could visit the West Lake. 他们在杭州停留下来以便可以游览一下西湖。(目的状语从句)