9大状语从句.doc

.状语从句（句子成分完整）1原因状语从句because, since, as, for区别：because语气最强 回答why because不与so连用since =now that 表示显而易见的原因 “既然因为” as “因为既然语气最弱for 是并列连词，表示推断的原因，for前常要加逗号注：seeing that / now that/ considering that in that/given that这几个词汇与since引导的原因状语从句意思相近，都表示“既然考虑到” 2地点状语从句Where whereverWhere there is a will ，there is a way.We must camp where we can find water.3时间状语从句when （v延或v短）while（v延）as表示动作同时发生“一边一边随着.” since （自从）before ；until ；the first time ；every/each time ；the last time by the time （到.时为止）时间状语从句考点：It is / has been +一段时间+since（一般过去时）自从已经多长时间了be doing sth when 正在.突然be about to do sth when 即将做某事突然while 除了“当.时”之外，还有两种用法：1）表示对比 “然而” 2）表示让步“虽然尽管”before 除了“在.之前“之外，还可表：还没来得及.就 He hung up before I could say a wordit +时间+before句型 ：（肯）要过多就才 （否）没过多久就.一就：as soon as the moment / minute / instant immediately instantly directlyHardlywhen No sooner thanNo sooner + had +主语+过分+than （一般过去时）Hardly + had +主语+过分+ when (一般过去时)By the time +句子（一般过去），主句（过完）By the time +句子（一般现在），主句（将来完成时will have done）4条件状语从句 if 如果 ；supposing ；provided假如as long as ； so long as；on condition that ；only if 只要in case以防以免 假使 ； unless除非， once 一旦在时间和条件状语从句中，要用一般现在时表将来时，现在完成时表将来完成时You should not play outside unless you have finished your homeworkIf weather permits, I will go swimming tomorrow5目的状语从句目的状语从句的谓语常含有may, might, can, could, should, would等情态动词引导词有：so that（以便）， in order that（为了；以便），Lest（免得；唯恐）， for fear that（生怕；以免）。注：凡是由lest（以免；免得），in case（以防）和 for fear that（生怕，唯恐）引导的目的状语从句中，用“should+动词原形 其谓语部分should可以省略。例如：1.Keep quiet in case you（should）interrupt him2.She is now studying，for fear that she（should）fail in English3.You must wake him early， lest he（should）be late forschool 6结果状语从句So/suchthat.句型 如此.以至于句型so +adj /adv+that 当出现不可数名词或名词复数时，与such.that 连用It is such bad weather that I am in a bad mood 当出现可数名词单数时，so与形容词不分，such与a/an不分 such a clever boy so clever a boy 当名词前有many much few little 修饰时，用so.that感叹句的用法与此句型类似，what相当于such how相当于so 即若感叹句中出现不可数名词或名词复数时，感叹句要用what来引导若感叹句中出现可数名词单数时：what a clever boy he is！ How clever a boy he is！so that可引导目的状语从句，也可以引导结果状语从句。 He worried so that he couldnt sleep.他急得睡不着。(so that引导结果状语从句)I came to the class early so that I could catch the bus(so that引导目的状语从句)7比较状语从句 倍数基本句型倍数+形容词，副词比较级+than倍数+as +形容词，副词原级+as倍数+the size of （height width depth weight length）the more .the more 越越The more you work hard ,the more progress you will makeAsas 和一样 not as/soas. 和不一样A is to B what C is to D A对于B就像是C 对于D8让步状语从句引导词：though, although, as, even/ if though, no matter-wh, whetheror not（无论是否）以as, though引导的让步状语从句多用倒装语序，即把在从句中作表语的名词、形容词，或修饰谓语动词的副词放在as/though之前。当作表语的单数可数名词位于句首时，名词前的不定冠词要省略Try as he might，he still cant open the doorHard as he worked, he couldnt make ends meetChild as he is, he knows a lot However引导的让步状语从句：However +adj/ adv+主语+谓语Wh-ever 引导让步状语从句既可以用wh-ever 或no matter wh- 但若是引导主语从句或宾语从句，只能用wh-ever不能用no matter wh-No matter what he said I would not believe himWhatever you said has a great effect on your child.注意：desp