人教版八年级上册Unit 10 If you go to the party, you’ll have a great time!　Section A (Grammar Focus-3c)学案

Unit 10　 If you go to the party, you’ll have a great time!
Section A (Grammar Focus-3c)
语法精讲细练
条件状语从句
【语法感悟】
1. ——我想我将乘坐公共汽车去参加聚会。
——如果你(那样)做, 你将会迟到。
—I think I’ll take the bus to the party.
— If you do, you’ll be late.
2. ——如果他们今天举行聚会, 将会发生什么
——一半的学生将不会来。
—What will happen if they have the party today
—Half the class won’t come.
3. 如果我们那样做, 更多的人想玩这个游戏。
If we do that, more people will want to play the games.
【语法解读】
一、定义:条件状语从句表示从句动作的发生是主句动作发生的前提条件。
二、结构:if引导的条件状语从句既可放在主句之前, 也可放在主句之后。从句位于主句之前时, 常用逗号将其与主句隔开。
三、时态:if引导的条件状语从句中用一般现在时表示将来的情况。
1. 主句的谓语动词是一般将来时。
*You will be late for school if you get up late. 如果你起得晚, 你将会上学迟到。
2. 主句的谓语动词中含有can/may等情态动词。
*If you help me, I can finish my work on time. 如果你帮助我, 我能按时完成我的工作。
3. 主句是祈使句。
*Don’t forget to lock the door if you are the last one to leave the room.
如果你是最后一个离开房间的人, 别忘了锁门。
四、句型转换
1. 借助“祈使句+and/or+陈述句”来转换。其中and表示句意顺承, or表示转折。
*If you don’t hurry up, you’ll be late.
=Hurry up, or you’ll be late.
如果你不快点, 你就会迟到。
*If you use your head, you’ll find a way.
=Use your head, and you’ll find a way.
如果你动脑, 你会找到一种方法。
2. 借助介词with或without来转换。
*If you help me, I’ll finish my job soon.
=With your help, I’ll finish my job soon.
如果你帮助我, 我会很快完成我的工作。
【语法精练】
单项选择
1. (2023·吉林中考)It is really dangerous ______people run the red traffic light.
A. if　　B. unless　 C. though　 D. until
2. (2023·安徽中考)Our country will be much better for everyone in the future ______we all do something to help now.
A. if B. before
C. so that D. even though
3. If it______tomorrow, my family will go camping.
A. don’t rain B. doesn’t rain
C. didn’t rain D. won’t rain
4. ______ you look after it carefully, this coat will keep you warm through many winters.
A. If B. Unless C. Before D. So
5. John won’t answer the phone if he ______the number.
A. knew B. doesn’t know
C. will know D. didn’t know
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