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目的状语从句的一个特点:由于目的都是未来的行为，所以从句中一般用表示未来可能性时态，当然还可以用will,would,can等等。
1、由so...the...和 such...that...引导的目的状语从句，应该注意可能出现的以下结构，例如：
I am telling you that lest you should make a mistake.
我告诉你这一点，以免你搞错。
so nice a boy that…
such a nice boy that…
so beautiful/diligent/carefully … that…
such (fine weather/great improvement) that…
2、so that引导的结果状语从句是我们在英语学习中经常见到的一个词组，例如：
1）She worked hard so that everything would be ready by 5 o'clock.
她努力工作，以便在五点前是一切都就绪。
2）She looked down so that she should not see his eyes.
她垂下目光，使她看不到他的眼睛。
3）Everyone lend a hand, so that the sowing was done in time. 3、so much so that的用法，该结构用于形容词或副词之后，表示"到如此程度以致于"。例如：
He was very weak, so much so that he could not walk.
I long to visit Beijing, so much so that I dream about it every night. 4、in order(that)"以便" to the end that "为……起见，以便"例句:
1）He works hard in order that his family may be happy.
为了让家人幸福，他努力工作。
2）He shouted at the top of his voice,to the that(=in order that)he might be heard.
他高声呼喊，为的是让人们能听见他的说话。 5、含有情态动词的目的状语从句，例句:
1）I am punishing the child lest he should make the same mistake.
我惩罚那个孩子，以免他再犯同样的错误。
2）She took her umbrella lest it(should)rain.
他带了把雨伞，唯恐天要下雨。
3）Lest the wall(should)collapse,they evacuated the buliding.
他们撤离了大楼，以防墙壁倒塌。 6、in case既可引导目的状语从句，也可引导条件状语从句，主要视句意而定：
1）In case he comes, let me know.
如果他来，告诉我一声。
2)Tell me in case you get into difficulty.
遇到困难请告诉我。
in case引导目的状语从句，从句有时可用“should+动词原形”这样的形式：
Take your coat in case it rains (should rain). 带着雨衣以防下雨。 | 
