目的状语从句知识点考点复习 目的状语从句表示“为了、以便”，常同表示“能够”的情态动词连用。如：can、could、may和might。有时偶尔也可用shall、should、will和would。 ①so that和in order that 这是两个最常见的引导目的状语从句的短语，表示“为了、目的是、以便”。so that较常见，in order that多用于较正式的场合。In order that从句可放在主句前或主句后，而so that从句一般放在主句后面，有时放在主句前表示强调。例如： Speak loudly so that you can be heard clearly. In order that others will notice her, she wear a bright coat. The teacher explained the answer again and again in order that we could understand it fully. ②lest、in case和for fear that 这三个词都表示“以防、以免”引导目的状语从句。lest从句要用虚拟语气，in case和for fear that引导的目的状语从句一般用虚拟语气间或用陈述语气。例如： Take an umbrella, lest it should rain. Take an umbrella in case it rains. She got up early for fear that he would be late for work. 谷雨刷题王 速记英语单词方法 新概念英语青少版 lest、in case和for fear that引导目的状语从句可以转换为so that或in order that+否定动词或否定的不定式或动名词短语。例如： He got up early lest(for fear that、in case) he should miss the first train. = He got up early so that(so、that、in order that) he wouldn’t miss the first train. = He got up early in order/so as not to miss the first train. = He got up early for fear of missing the first train. ③如何区别结果状语从句和目的状语从句 通过上述结果状语从句和目的状语从句的讲述，我们知道so that既可引导结果状语从句也可引导目的状语从句。那么如何辨别so that引导的从句是结果状语从句还是目的状语从句呢？可以从以下方面予以区别。 A、目的状语从句中的动词前要用can、could、may、 might、shall、should、will和would 等情态动词，表示某种可能性，是主观愿望；而结果状语从句则不用，表示的是客观事实。 B、引导结果状语从句的so that前常有逗号，而引导目的状语从句的so that前一般不用逗号。 C、结果状语从句都放在主句后，而目的状语从句可放在主句前或后。例如： So that we could finish the task on time, we worked day and night.（目的状语从句） He was ready to help others, so that he was respected by everyone.（结果状语从句） He arrived at the railway station early, so that he caught the train.（结果状语从句） He arrived at the railway station early so that he caught the train.（目的状语从句） D、连词so……that引导的结果状语从句时，它的否定形式so……that……not有一个变体so……but，而目的状语从句中不存在。例如： He is not so injured that he may not stand. = He is not so injured but he may stand. 11. John may phone tonight. I don’t want to go out ________ he phones. A. as long as B. in order to C. in case D. so that 12. ____others say, the expert is sure that his theory is correct    A. No matter  B. It doesn’t matter C. Whatever D. What 13. Many places are flooded by heavy rainfalls, so they can’t walk _______ they like these days.    A. when      B. whenever  C. where    D. wherever 14. His father began to work ______ his childhood.    A. since      B. before    C. as early as    D. while 15. The roof fell _____ he had time to dash into the room to save his baby.    A. before    B. as        C. after      D. until 16. --- The thread of my kite broke and it flew away.    --- I had told you it would easily break ________it was the weakest    A. when    B. where    C. unless      D. since 17. The crowd started cheering ______ he rose to speak.                        A. as        B. since      C. till        D. where 18. I had worked here ______ you came here. But I shall leave for England ______.    A. before long, before long    B. before long; long before    C. long before, before long    D. long before; long before 19. Scientists say it may be five or ten years _____ it is possible to test this medicine on human patients. A. since      B. before      C. after        D. when 20. ___ the Internet is bringing the distance between people, it may also be breaking some homes or will cause other family problems.    A. When      B. If        C. As        D. While