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1、Unit 10If you go to the party, youll have a great time!,Period 1,英语中的句子,根据句子的结构，英语中的句子可分为简单句、并列句和复合句。,一. 简单句,简单句只包含一个主谓结构，即只有一个主语（或并列主语）和一个谓语动词（或并列谓语）。它的各个结构都只由单词或短语表示。,1.I have a sister.,二. 并列句,并列句是由两个或两个以上的简单句连接而成。其结构是：简单句 + 并列连词 + 简单句。,1.I have a sister and he has a brother.,2.I like math but he
2、doesnt.,三. 复合句,复合句是由一个主句和一个或一个以上的从句构成的。其结构是：1. 主句 + 连词 + 从句；I want to be an actor when I grow up. 主句 连词 从句 2. 连词 + 从句 + 主句； If you go to the party, youll have a great time! 连词 从句 主句,If引导的条件状语从句：,1. 如果主句用一般将来时，if引导的条件状语从句用一般现在时； If it doesnt rain, well have a trip.,If you go to the party, youll have
3、a great time! 连词 从句 主句,即“主将从现”。,当堂训练:,一、用所给词的适当形式填空。1. Where _ he _(see) the film if he _(have) time tomorrow?2. If there _(be) fewer trees, there _( be) more pollution.,will,see,has,are,will be,当堂训练:,二、选择。1. If there _ no buying and selling of animals, there_ no killing in nature. A. is; will he B.
4、 will be; will be C. is; is D. will be; is2. The students _ have a sports meeting this weekend if it _。 A. wont; rains B. are going to; is going to rain C. will; rains D. wont; will rain,A,A,当堂训练:,3. If she _ here tomorrow, I will tell you.A. comesB. will comeC. comeD. came4. Tom wants to know if you will have a soccer game tomorrow. Yes. But if it _, well play chess.A. will rainB. rained C. is raining D. rains5. If Tom _ the game, well give him a surprise.A. win B. wins C. wonD. wining,A,D,B,