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1、目的状语

(1)、①引导目的状语的结构：to do/ so as to do/ in order to do/ in order that/ so that.

②引导结果状语的结构：to do/ so 形容词；副词 as to do/ so 形容词；副词；分词；(限定词 名词) that/ such (单数；复数；不可数)名词 that/ so (that)

(2)、order作“订购”讲时，只用陈述语气。如：I have ordered a set of books for the students each

(3)、不用order to do something, 要改为从句。

(4)、in order to/ so as to表示目的，so … as to/ enough to/ too … to表示结果，作目的状语的否定结构避免单独使用not to do来表达，要用so as not to/ in order not to。

(5)、so that 和in order that (正式语体)，意思为“以便，使能够，为的是”，主从句的主语相同与否均可，目的状语从句中常用情态动词can, could, may, might, will, would, should 等。如：I got up early so that I (caught) could catch the train. 主从句的主语一致可转换成不定式in order to 或so as to ，句子的主语通常是不定式的逻辑主语。so as to, so that, in order that表示目的，不能放在句首。

练习：

①In order to make our city green, ___.

A. it is necessary to have planted more trees B. many trees need to plant

C. our city need more trees D. we must plant more trees

②___ late in the morning, Bob turned off the alarm clock.

A. So as to sleep B. Sleeping C. To sleep D. Having slept

③In my opinion, you’d better eat and sleep more ___ lose any more weight.

A. so as to B. in order not to C. to not D. so that not to

④Dad, why are you always busy with your work every day? ___ our life easier and better.

A. Make B. Making C. To make D. To be making

⑤___ admitted to famous universities, parents should try to cure their children ___ bad habits.

A. In order to be; from B. So as to be; of C. So as to be; from D. In order to be; of

2、 as从句

在as引导的非限制性定语从句中，连接代词as在句子中可以作主语、宾语或表语等，可以指人或物。其在定语从句中的位置比较灵活，即可以在句子前面，在句子中间或句子末尾。常用的结构有：as we all know; as is well known to…; as is often the case; as is said/mentioned above; as has been said before; as I told you before; as is evident; as often happens; as can be seen; as is/was expected; as we expect; as I can remember等。

注意：

①as通常只指整个句子的内容，不表示部分内容。

②as引导的非限制性定语从句通常指“事先可以预料到的”“料想到的”，表达“好”的方面。

③as引导限制性定语从句时，常构成the same…as…; such…as…; so/as …as…等结构。在从句中既可以指人、物，也可以指整个句子。

例如：

①This is also part of your work, as I told you before. 我曾告诉过你，这也是你工作的一部分。

②The man was a teacher, as was evident from his way of speaking. 从那人说话的样子可明显看出，他是个老师。

③Such ideas as he hits on are worthless. 像他那样偶然想起的主意是无用的。

④It’s the same story as I heard from her yesterday. 这故事跟我从她那儿听到的相同。

⑤He will marry as pretty a girl as he can find. 他要尽可能找漂亮的女孩结婚。

⑥Such people as have made great contributions to the world should be greatly respected. 那些对世界做出巨大贡献的人们应该受到极大的尊重。

练习：

①___ many developing countries, China is in great need of science and technology.

A. As B. as with C. Which is the case with D. As like

②___ is mentioned above, the number of the students in senior schools is increasing.

A. Which B. As C. That D. It

③___ is known to everybody, the moon travels round the earth every month.

A. It B. As C. That D. What

④___ other developing countries, China need bring in advanced technology from developed countries.

A. As B. as if C. As with D. Like the

⑤___ the day went on, the weather got worse.

A. With B. Since C. While D. As

⑥___ is known to all, China will be an ___ and powerful country in 20 or 30 years’ time.

A. That; advancing B. This; advanced C. As advanced

D. It; advancing

⑦___ is known to everybody, the moon travels round the earth once every month.

A. It B. As C. That D. What