条件状语从句PPT课件

条件状语从句
二、时态问题
在条件状语从句中，要注意" "的规定，即 主句用一般将来时，从句用一般现在时表示将来时。
I will come to see you if I have time. 我有时间，我就来看你。 常见考法
主将从现
对于条件状语从句的考查，多以单选和完形填空的形式，从 时态的角度设题，考查学生灵活运用的能力，或从连词的意义角 度让大家选择连词。
1、引导条件状语从句最常用的连词是if,由if引导的条 件状语从句表示在某种条件下某事很可能发生。
If you ask him, he will help you.
如果你请他帮忙,他会帮你的。
If you fail in the exam, you will let him down.
如果你考试不及格,你会让他失望的。
难点
各种从属连词的含义 及用法比较；
难点
状语从句的时态问题;
常考点
时间状语从句, 让步状语从句， 条件状语从句
Back to school
引导条件状语从句的连接词主要有： if(如果)、unless(除非)或 as long as(只要)等。unless在意思上等于 if...not。
条件状语从句
• 34. It was raining heavily, _____ we decided to stay at home and watch TV. A. but B. or C. because D. so
• 36.______ the dinner was all over, everyone helped wash the dishes. A. How B. When C. Before D. Why
条件状语从句
典型例题： If he ___in half an hour, we ___wait for him.
A. won't come ,won't
B. won't come ,don't
C. doesn't come ,won't D. will come ,don't 解析：本题考查条件状语从句"主将从现"的运用。题干的 意思是"如果他一小时后不来，我们将不会等他了"，从"in half an hour"，"一小时后"可知本句说的是未来的事，那么if引导 的条件状语从句要用一般现在时表示将来时，主句要用一般将 来时。
37. A snake bit him ______ he went to see a doctor at once. A. if B. where C. because D. so
• 28. You will be late for school_____ ___ you don’t get up early. A. but B. if C. and D. or
C. will she come; comes D. will she come; will come
条件状语从句
3．We’ll go to the park if it_____ rain tomorrow.
A. don’t B. doesn’t C. won’t
4．We are not sure if it ____ tomorrow. If it ____ , our sports meeting will be put off. B. rains; will rain D. will rain; rains
答案：C
条件状语从句
1. If it ____tomorrow, we ____ to climb mountains. A. doesn’t rain; go B. won’t rain; will go
C. won’t rain; go
D. doesn’t rain; will go
2．—Do you know if ________ tomorrow morning? —No. I will call you if she ________ back. A. she will come; comes B. she comes; will come
6.You will not get good grades ______ you work hard. A. and B. unless C. if D.as long as
条件状语从句
• 40. – Will you please give the dictionary to Jane? – Sure, I’ll give it to her _______ she arrives here. A. before B. until C. because D. as soon as
期中备考之 状语从句复习
• Contents
text 回顾九种常用的状语从句 text 天津市考试说明中的考试目标
（状语从句部分）
textt 历年中考考题中状语从句分析
条件状语
结果状语
地点状语
目的状语
比较状语
方式状语 让步状语 时间状语
原因状语
状语从句的常考点与重难点
条件状语从句
3、so/as long as只要 You may borrow my book as long as you keep it clean. 只要你保持书的清 洁，你就可以把我的书借去。 So long as you're happy, it doesn't matter what you do. 只要你高兴，你做什么都没有关系。
条件状语从句
2、unless = if...not.
除非,若不,
Let's go out for a walk unless you are too tired.
=If you are not too tired, let's go out for a walk.
Unless it rains, the game will be played.除非下雨, 比赛将照常进行。
A. rains; rains C. will rain; will rain
条件状语从句
误区提醒 if 既可以引导条件状语从 句，表示"如果 "，也可以引导宾语从句，表达"是否"。辨别 它在这两种从句中的时态是我们经常容易出 错的地方。另外，if 和unless的用法也需注 意
条件状语从句
5. I’ll give the book to him as long as he ___ here next Su nday. A. will come B. comes C. is coming D. came