全套人教版八年级英语上册Unit 10同步练习题及答案16精选.doc

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1、单元语法小专题(Grammar Focus)语法精讲if 引导的条件状语从句条件状语从句通常由连词 if 引导，意为“如果；假如；倘若”，表示在某种条件下，很可能会发生某种事情或不发生某种事情。1if 条件状语从句的位置在 if 引导的条件状语从句中，if 条件句位置比较灵活，可放在主句前面也可放在主句后面。若放在主句前，从句后面要用逗号和主句隔开。如：If he doesnt feel tired，he will visit the museum.He will visit the museum if he doesnt feeltired.如果他不感觉累，他就去参观博物馆。2if 条件状语

2、从句的时态搭配(1)当主句用一般将来时，if 引导的条件状语从句要用一般现在时。如：If it rains tomorrow，I wont climb the hills.如果明天下雨，我就不爬山。(2)当主句中含有 can，may，must 等情态动词时，if 引导的条件状语从句要用一般现在时。如：We can win the basketball game if he joins us.如果他加入我们，我们就能赢这场篮球赛。(3)当主句是祈使句时，if 引导的条件状语从句要用一般现在时。如：Help your mom with the housework if you finish you

3、r homework early.如果你完成作业早，就帮你妈妈做家务。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。3与其他句式之间的转换(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

4、 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。(3)if not 引导的条件状语从句，可以借助连词 unless 来改写。如：You will be late if you d

5、ont go there by bus.You will be late unless you go there by bus.如果你不乘公共汽车你就会迟到。语法精练.用括号内所给单词的适当形式填空。1If it rains tomorrow，I _(stay)at home.2He will take a trip to Beijing if he _(be not)busy next week.3Please tell Li Jun about it if he _(come)back.4If you dont wear your school uniform to the party，t

6、he teachers _(not let)you in.5She _(not go)shopping with her parents if it snows this afternoon.单项选择。()6.Do you know when he will come back tomorrow?Sorry，I donthe _ back，Ill tell you.AcomesBwill comeCcomeDmay come()7.Mary will go to Sanya if she _ a fiveday trip.AhaveBhadCwill haveDhas()8.What will

7、 you do if you _ to the party without invitation?AgoBwentCgoingDwill go()9.If I eat too much food，I _ too fat.AamBwasCwillDwill be()10.Ill give the book to him if he _ here next Sunday.Awill comeBcomesCis comingDcame.同义句改写，每空一词。11Study hard，or you wont pass the exam.If you study hard，you _ _ the exa

8、m.12Take a taxi，and youll catch the train._ you _ a taxi，youll catch the train.13If you dont help me，I cant catch up with the others.I cant catch up with the others _ _ _14We will be late for the meeting if we dont be quick.We will be late for the meeting _ _ _ _15If you are late，the teacher will be angry._ _ late，_ the teacher will be angry.单元语法小专题(Grammar Focus)stay2.isnt4.wont let5.doesnt go.610ADADB pass；takeyour helpwe are quick15.Dont be；or