语法复习AdverbialClauses(状语从句).ppt

Adverbial Clauses-语法要点 状语可用来修饰谓语动词、形容词、整个句子等等，状语主要由副词或与之相当的其他词类、短语或从句担任，下面主要讲述状语语从句，及状语从句中的注意事项。 区别 --- When, while, as when 从句的重点不在动作本身发生的状态，而只是把它作为一个时间点 when 从句的动词大多是瞬时动词 When 引导的从句中动作，往往发生在主句动作之前或之后 When:主句动作正在进行，从句中动作往往出乎意料 区别 --- When, while, as while 从句的侧重点在于描述动作正在发生的状态 while 从句一般用的是正在进行时 ，而另一件事的状态没有硬性的要求，根据具体情况而定 while 表示的是一段时间，是一个过程 区别 --- When, while, as While： 如果含有“一段时间”的含义的时候，就可以用while。例如： Strike while the iron is hot. 趁热打铁。 （趁着铁是热的这段时间，赶紧打铁 ） Strike when the iron is hot. （铁只热了一下，打一下，然后铁就冷了 ） 区别 --- When, while, as as 从句表示的也是一件事情正在发生，另一件事也正在进行当中 as 从句用的一般不用正在进行时，而只是一般过去时 The students took notes as they listened．学生们边听课边做笔记。 As we talked on, he got more and more excited. 我们继续往下谈的时候,他越来越兴奋。 The little girls sang as they went．小姑娘们一边走，一边唱。 IV. Before It won’t be long before he finishes his writing. I knocked the door several times before you came to open it. V. After After he (had) finished his work, he left there. He (had) finished his work before he left here. After finishing his work, he left here. Having finished his work, he left here. * 1.Adverbial Clauses of Time:（时间…….） Different Kinds of Adverbial Clauses: 2.Adverbial Clauses of Reason(原因…….） 3.Adverbial Clauses of Conditions(条件……. ） 4.Adverbial Clauses of Place (地点……. ） 5.Adverbial Clauses of Purpose (目的……. ） 6.Adverbial Clauses of Result（结果……. ） 7.Adverbial Clauses of Comparison（比较） 8.Adverbial Clauses of Concession(让步……. ） 9.Adverb Clauses of Manner(方式…….) 1.Adverbial Clauses of Time:（时间状语从句） when, while, as, before, after, since, until, as soon as, the moment, immediately , the minute , the second…. every time, each time, by the time 1)When he comes here tomorrow, I’ll call you. (at that time) I.when 2) Sorry，I was out when you called me. 1)While he was walking in the street, he met Tim. (分词短语） While walking in the street,he met Tim. Walking in the street, he met Tom. 2)He learned to speak English wh