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1、学习好资料欢迎下载If 引导的条件状语从句（用法）状语从句：用一个句子（从句）来作另一个句子（主句）的状语，用作状语的句子就叫作状语从句。作什么样的状语就叫什么类型的状语从句。例如：条件状语从句就是用一个句子来作条件状语。状语从句的分类：（1）时间状语从句凡是从句都必须有引导词，引导时间状语从句的词有when，before，after，until，as soon as，while 等。（2）条件状语从句主要看一下由if 引导的条件状语从句。if 意为“如果”，引导条件状语从句时，表示假如有从句的动作发生就（不）会有主句的动作发生。例如：If it doesnt rain tomorrow，we
2、 will go there by bike.如果明天不下雨，我们就骑自行车去那里。If I get there early，I can see the doctor quickly.如果我早早地到那里，我就可以快点看病。3）地点状语从句用法要点常用 where（哪里）和wherever（无论哪里）eg.Where there is a will，there is a way.有志者，事竟成。We will go wherever the motherland need us most.我们要到祖国最需要的地方去。（4）原因状语从句 用法要点常用的引导连词有because，as 和 since
3、，三者的区别是：在回答问题的时候，使用because；对于显而易见的原因，常用as 或 since；as 和 since 的从句常放在主句之前，而because 的从句常放在主句之后。eg.Why did you go？I went because Tom told me to go.你为何去？那是因为汤姆叫我去。He was angry not because we were late but because we made a noise.他很生气不是因为我们来迟了，而是因为我们弄出了声音。As it was raining hard，we had to be indoors.由于雨太大，
4、我们只好呆在家里。Since you feel ill，youd better not go to work.既然你感觉不舒服，你最好不要去上班了。（5）目的状语从句 用法要点常用的引导连词有so that，that 和 in orderthat 译为：以便，为了，目的是。eg.Please speak more slowly so that we can make full notes.请讲慢一点，以便我们能作详细笔记。I shall write down your ad学习好资料欢迎下载dress that I may not forget.我要把你的地址记下来，以免忘记。I sent t
5、he letter by air mail in order that it might reach him in time.这封信我以航空信发出，以便他能及时收到。注：目的状语从句可以用动词不定式来替换做目的状语。eg.We work harder than usual finish it in a week.我们比平常加倍努力工作以在一周内完成工作。三、主句与从句时态一致的问题。在时间状语从句和条件状语从句中，主句和从句之间的时态一致问题一般分下列两种情况：1.若主句是祈使句，或主句中有情态动词，或主句中谓语动词是一般将来时，那么从句用一般现在时表示一般将来时。例如：Be careful
6、when you cross the road.过马路时要小心。Put up your hand if you have any questions to ask.如果你们有问题要问的话，请举手。The traffic must stop when the lights are red.红灯亮时，车辆必须停下。2.若主从句谓语动词都是陈述过去，那么主从句都可以用一般过去时。例如：She could sing when she was four years old.她四岁的时候就会唱歌。虚拟语气和 if 引导的条件状语从句有区别吗？条件状语从句连接词主要有if,unless,as/so long
7、 as,on condition that 等。if 引导的条件句有真实条件句和非真实条件句两种。非真实条件句已在 虚拟语气 中阐述。unless=if not.例如：Lets go out for a walk unless you are too tired.如果不太累，我们去散散步。If you are not too tied,lets go out for a walk.You will be late _ you leave immediately.A.unless B.until C.if D.or 答案 A。句意：除非你立即走，否则你就回迟到的。可转化为If you dong
8、leaveimmediately,you will be late。B、D 句意不对，or 表转折，句子如为You leave immediately or you will be late.虚拟语气1）虚拟语气用来表示说话人的主观愿望或假想，所说的是一个条件，不一定是事实，或与事实相反。虚拟语气在条件句中应用文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I
9、7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I
10、3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:C
11、Y3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE
12、5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW
13、3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码
14、:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9
15、HE5I7N10K6M7 ZW3I3P6F2Y8学习好资料欢迎下载比较多。2）条件句可分为两类，一类为真实条件句，一类为非真实条件句。非真实条件句表示的是假设的或实际可能性不大的情况，故采用虚拟语气。真实条件句用于陈述语气，假设的情况有可能发生。一般现在时shall/will+动词原形祈使句情态动词一般现在时例如：If he comes,he will bring his violin.如果他来，会带小提琴来的。The volleyball match will be put off if it _.A.will rain B.rains C.rained D.is rained 答案 B。真
16、实条件句主句为将来时，从句用一般现在时。注意：1）在真实条件句中，主句不能用be going to 表示将来，该用shall,will.（错）If you leave now,you are never going to regret it.（对）If you leave now,you will never regret it.2）表示真理时，主句谓语动词不用shall（will）+动词原形，而直接用一般现在时的动词形式。非真实条件句1）虚拟语气可以表示过去，现在和将来的情况，时态的基本特点是时态往后推移。a.与现在事实相反的假设一般过去时（be 用 were）should（would）等+
17、动词原形例如：If they were here,theywould help you.如果他们在这儿，会帮助你的。含义：They are not here,theycan t help you.b.与过去事实相反的假设过去完成时should（would）等+have+过去分词例如：If he had come yesterday,I should/would have told him about it.如果他昨天来的话，我会把这件事告诉他的。含义：He did not come yesterday,so I did not tell him about it.c.表示对将来不大可能发生的事
18、情的假想 一般过去时should/would等+动词原形were+不定式should+动词原形例如：If you succeeded,everything would be all right.如果你将来成功了，一切都会好的。If you should succeed,everything would be all right.If you were to succeed,everything would be all right.含义：You are not likely to succeed,everything will be what it is now.文档编码:CY3I5S8N9W
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20、7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8
21、文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N
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23、6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2
24、Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S
25、8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8学习好资料欢迎下载文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W
26、9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M
27、7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8
28、文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N
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31、Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8文档编码:CY3I5S8N9W9 HE5I7N10K6M7 ZW3I3P6F2Y8