八年级英语上册 Unit 10 If you go to the party you’ll have a great time单元语法练习 （新版）人教新目标版.doc

unit 10 if you go to the party, youll have a great time单元语法小专题（grammar focus）语法精讲2if引导的条件状语从句的用法条件状语从句通常由连词if引导，意为“如果、假如”，表示在某种条件下，很可能会发生某种事情。1.if条件状语从句的位置在 if 引导的条件状语从句中，if 条件句位置灵活，可直接放在主句后面，若 if 条件句放句首， 从句后面要加逗号，和主句隔开。如：if i have time tomorrow, ill go to the countryside with my friends.= ill go to the countryside with my friends if i have time.如果我明天有时间，我将和我的朋友们去乡下。2.if条件状语从句的时态搭配if 引导条件状语从句，主句用一般将来时，从句则用一般现在时。如：if it rains tomorrow, i wont climb the hills.如果明天下雨，我就不爬山。温馨提示：在if 引导的条件状语从句中，有时根据句意的需要主句可能用到情态动词。如：if you finish your homework, you can watch tv.如果你完成了家庭作业，你可以看电视。3.if引导的条件状语从句与if引导的宾语从句的区别 if 引导的条件状语从句，if意为“如果”，主句用一般将来时，从句则用一般现在时；if引导宾语从句时，if意为“是否”， 相当于 whether，时态需根据语境确定。如：i dont know if it will rain tomorrow.我不知道明天是否会下雨。if条件状语从句用法歌诀：if 条件句不一般,几个要点记心间;条件句,放在前,逗号要放句中间。条件句，表可能，主句多用将来时；条件句，表事实，主句常用现在时。4.与其他句式之间的句型转换(1)借助“祈使句+and (or)+一般将来时的句子”这一句型来转换。and在句意上表示顺承关系，or表示转折关系。如：if you get up early,youll get there on time.= get up early,and youll get there on time.=get up early,or you wont get there on time.早点起床，你就会准时到那里。(2)借助介词without或with来转换条件状语从句。如：if there is no water, fish will die.=fish will die without water.如果没有水，鱼就会死。if you help me, ill finish the work soon.= with your help, ill finish the work soon.如果你帮助我，我就会快点完成工作。语法精练.用括号内所给单词的适当形式填空。1.i_ (buy) you a computer if you get good grades.2.we_ (not go) there if he doesnt agree.3.you will win the match if you _(practice) hard.4.please call me if you_ (have) any questions.5.you may go swimming if you_ (finish) your homework.单项选择。( )6.do you know when he will come back tomorrow?sorry,i dont know.when he _ back,ill tell you.a.comes b.will come c.come d.may come ( )7.mary will go to sanya if she _ a five-day trip.a.have b.had c.will have d.has( )8.what will you do if you to the party without invitation? a.go b.went c.going d.will go ( )9.if i eat too much food, i _ too fat.a.am b.was c.will d.will be( )10.ill give the book to him if he _ here next sunday.a.will come b.comesc.is coming d.came.改为同义句，每空一词。11.study hard, or you wont pass the exam.if you study hard, you _ _ the exam.12.take a taxi,and youll catch the train. _ you _ a taxi, youll catch the train.13.if you dont help me, i cant catch up with the others.i cant catch up with the others_ _ _ .14.use your head and youll have a good idea. _ you _ your head,_ have a good idea.15.if you are late,the teacher will be angry._ _ late, _ the teacher will be angry.单元语法小专题（grammar focus）.1