初中句子语法(初中句子语法知识点总结)
导语:200个句子轻松搞定中学语法难点(之十五)
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看到题目一定要先思考,再看和自己想的答案是否一致,如果不对又错在什么地方。每个句子对应一个语法知识点,看例句轻松复习语法。
171. Hurry up, or you’ll miss the early bus. (改为含条件状语从句的复合句)
______ ______ ______ hurry, ______ ______miss the early train.
解析:“祈使句+and / or+陈述句”句型中的祈使句就相当于一个if引导的条件状语从句。注意:改写时因为前面用了连词if,后面的连词and / or要去掉。If you don’t, you will。
172.This text is very difficult. I can’t understand it. (合并为同义句)
This text is ______ difficult for me ______ understand.
解析:因为too…to…意为“太……而不能……”正好与前面的意思相吻合。另外,改写后的句子也可这样表达The text is so difficult that I can’t understand it. 所以答案是: too, to。
173. I know a little bit about Italy as my wife and I ____ there several years ago.
A. are going B. had been C. went D. have been
解析:题干中前半句“know”,一般现在时;后半句出现“several years ago”,明显的表示过去的时间,所以选择一般过去时“went”,答案C.本题很多同学都顺着中文“去过”而误选了“D. have been”,是没有掌握好语句中出现了具体过去时间这一关键。
174. The young girl sitting next to me on the plane was very nervous. She ____ before.
A. hasn‘t flown B. didn‘t fly C. hadn‘t flown D. wasn‘t flying
解析:题干中前半句“was”,一般过去时;后半句最后出现“before”说明是在过去(was)之过去,前半句的“was”给出了选择过去完成时的时间背景,因此用过去完成时,选择C.
175. By the time you get back, great changes ______ in this area.
A.will take place B.will be taken place
C.are going to take place D.will have taken place
题干“By the time you get back”,是“到你(将来)回来时”,这里因为是时间状语从句,将来时用一般时代替,因此后半句的时间应当使“将已经”,与完成时有关,一次用将来完成时,故选择D.
176. When their first child was born, they ______ for three years.
A. had married B. had been married C. had got married D. got married
[解析★]选B。这道题考察过去完成时。看到for three years, 第一,马上想到使用完成时,排除D。第二,动作必须是可延续性的,所以排除A、C两项。可以这样来思考:当他们的第一个孩子出生时,他们已经结婚三年了,was born是一般过去时,所以结婚三年发生在孩子出生之前,过去的过去就用过去完成时,for three years是时间段,所以动词要用延续性动词be married,而get married是非延续性动词。
177. I was really anxious about you. You _____ home without a word.
A. mustn’t leave B. shouldn’t have left
C. couldn’t have left D. needn’t leave
[解析★★]选B。 这道题情态动词+have done 表示“对过去发生的事件的推测”。shouldn’t have done 表示“本不该做某事,但是却做了。”所以选B最合适。C. couldn’t have done 表示“过去不可能发生的事”。
178. When all the work ______, you may go back home.
A. finishes B. has finished C. is finished D. will be finished
[解析] 考察两个语法点:第一考察主将从现,主句使用may + 动词原形,相当于一般将来时,从句应该使用一般现在时,所以A、C两项入围。第二考察被动语态。work 和finish 的关系是动宾关系,因work(工作)自己本身不能发出finish这个动作。所以用被动语态。答案是C
179. Lucy and I are classmates. We _______ in Class One.
A. all are B. are all C. both are D. are both
【解析】此题容易误选A或C。这里受到汉语思维的影响引起的,译成汉语正好是“我们都在一班”。表示两者都要用both,both一般放在be动词、情态动词或助动词之后,行为动词之前。正确答案为D。
180. If there are ______ trees, the air in our city will be _______cleaner.(more/fewer/much)
横线后trees是可数名词的复数形式,只能在修饰名词的复数的fewer和more中选择,根据句意选择“更多more”;而后面cleaner往往学生会以为是个不可数名词而选择much,其实后面是clean个形容词,而且其后er表示它是形容词的比较级,只有much才能修饰形容词的比较级。
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