2022中考英语复习之状语从句（25张）

(共25张PPT)
专 题 复 习
状语从句
考点揭密
中考考点设置
典型例题解析
课时训练
考点揭密
1.在复合句中修饰主句中的动词、形容词或副词，起状语作用的从句叫状语从句。状语从句可置主语之前，也可置主语之后。前置时，从句后用逗号与主句分开；后置时，与主句之间无标点符号。
e.g. If you go to the party, you will have a good time.
e.g. You will have a good time if you go to the party.
①时间状语从句：when,while,until/till,after,before,
since,as soon as等
②条件状语从句：if, unless, as long as等
③原因状语从句：because, as, since, for等
④结果状语从句：so…that, such…that等
2.状语从句由从属连词引导，根据其含义，可分为时间、条件、原因、结果、目的、让步、地点、比较和方式状语九类。
⑤目的状语从句：so that, in order that等
⑥让步状语从句：although, though, even though，
even if, while,however,whoever等
⑦比较状语从句：as...as,not as (so)...as,than
⑧地点状语从句：where,wherever.
⑨方式状语从句：as if,as though.
中考考点设置
1.时间状语从句（引导词：when, while, as, before, after,as soon as, until/till, since.）
e.g. Mother was cooking dinner when I reached home.
e.g. While the girl was shopping, the UFO landed.
*when 可以引导时间点，也可以引导时间段，所以谓语动词可以是短暂性的，也可以是持续性的。
*While 引导时间段，所以谓语动词必须是持续性的。
e.g.When I lived in the countryside,I used to carry some water for him.
(1)when 和 while 的用法区别
(2)until/till和not...until的用法
②not…until在否定句中表示“直到……才”，
主句中的动词常用短暂性动词, 这时till/until可用before替换。
e.g. I didn't leave until/till/before she came back.（leave是个短暂性动词）
①till/until 在肯定句中表示“直到为止”，主句中动词用延续性动词 。
e.g. I waited till / until he arrived. (wait是一个延续性动词）
(3) 时间状语从句中的时态问题
①当主句是一般将来时，或含有情态动词，或为祈
使句时，从句用一般现在时.
e.g. I won’t go to bed until I finish my homework.
e.g. When the lights are red,the trafic must stop.
e.g. Please don't go to bed before you finish your homework.
②当主句为过去时时，从句也用过去时态。
e.g. I liked reading when I was young.
practice:
1. I will go to bed as soon as I ____my
homework.
A. will finish B.finishing C. finish
C
2. I will not watch TV until I finish my
homework .
=I will not watch TV I finish my homework .
before
3.My sister (read)her book
in the classroom when her teacher came in.
was reading
4.I (do)homework while my parents (watch) TV last night.
was doing
were watching
(3)遵循“主将从现”的原则, (即主句若为一般将来时，从句用一般现在时代替将来。)
2.条件状语从句（引导词：if,unless,as long as ）
(1)if在条件状语从句中的意思是“如果”
e.g. If I am free, I will call you.
(2)unless是从属连词，它引导条件状语从句，译作“除非……否则的话”
e.g. You will be late for class unless you start right
now.
e.g.They will go hiking if it doesn't rain tomorrow.
中考考点设置
(5)if在宾语从句中的意思是“是否，假设（=whether）”,
根据句意需要可以用将来时态。
e.g. Hurry up, or you will be late.
=If you don’t hurry up, you will be late.
=Unless you hurry up, you will be late.
(4)if...not与unless(=if…not…) 及or的同义句转换。
小结:“祈使句+or+一般将来时的陈述句”结构中，
Or表示转折，译作“否则，不然的话”
相当于一个否定的条件状语从句。
相当于If you don't(can't)…, you will…
e.g.--Do you know if Jack will go to the movies with us this afternoon
practice:
1. If you ____ to the party, you____
have a good time.
go
will
2. She (go shopping)
next Sunday if she_______ busy.
will go shopping
is not
中考考点设置
3.原因状语从句
(1)引导词:because, since, as.
(2)对because 原因状语提问用“why”。
(3)because 不能与so连用。
(4)because,since,as,for的区别：
---Why are you standing here
---Because I’m waiting for my uncle.
(1)because 从句所表示的是对方不知道的直接的原因，因此在回答以why引导的特殊疑问句时只可用because,它引导的从句可以位于主句前或主句后.而as,since 引导的从句却不可；
例句: Li Hong didn't go to school
yesterday,because he was ill.
(2) as从句所表示比较明显的原因和理由(由于,既然)这种原因一般是大家知道的,一般从句说明原因，主句说明结果。其从句位于主句之前,
(3) since用来表示比较勉强的理由或原由已为人们所知。
e.g. As the water was not deep, we were able to
cross the river.(从句说明原因，主句说明结果)
e.g. Since everybody is here, let's begin the mee-
ting.（“大家都在这里”的原由已为人们所知）
(4)for往往用于附加理由证明。所说的理由是一种补充
说明。分句前常有逗号，其引导的分句不可放于句首。
e.g.It’s spring now, for the flowers are out.
Practice:
Why hasn’t Mr. Li come to work today.
---- ____he has gone to Beijing to have a meeting.
A.If B.Until C. Though D. Because
2. I decided to stop and have lunch, ___ I was
feeling quite hungry.
Because of B. for C. As
D
B
中考考点设置
4.结果状语从句
(1)结果状语从句引导词：so...that,such...that.
(2)so...that与such...that的区别
①so+形+a/an+名
②such+a/an+形+名
③such+形+不可数名词/可数名词复数
e.g.He is so young a boy that he can't carry the box.
e.g.It is such an red apple that I want to eat it.
1.It is ___small a room ___it can't hold so many
people. A. so… that, B. such…that…
=It is ___ a small room ___it can't hold so many
people. A. so… that, B. such…that…
Practice:
A
B
e.g.There are such beautiful flowers that we want to pick it.
中考考点设置
e.g.There are big trees around the house so that it is hardly seen by passers-by.
5.目的状语从句
(2)从句的谓语动词里常有can,could,may等情态动词.
(1)引导词：so that
e.g. He works hard so that he can get good grades.
中考考点设置
6.让步状语从句
(1)引导词：though /（although）,even though/if.
(2)though 不能与but连用。
请判断正误，对的写“T”，错误的写“F”。
A. Though I like looking after her, but she doesn't let me do it. ( )
B. Though I like looking after her, she doesn't let me do it. ( )
C. I like looking after her, but she doesn't let me do it. ( )
F
T
T
【例1】 Lucy knew nothing about it _________her
sister told her.
A.because B.until C.if D.since
典型例题解析
【例3】 The young man travelled all over the world
he had a man-made leg.
A.though B.if C.as D.because
B
【例2】 Other people won't be pleased if he the
queue.
A.will jump B.jumps C.jump D.jumped
B
A
【例4】 The students will go to Summer Palace if it
tomorrow.
A.don't rain B.won't rain
C.doesn't rain D.isn't rain
C
Ⅰ.单项选择
1.This group of toursts had to wait_________12:00 to check in at the hotel.
A.since B.when C.while D.until
2.Because his mother was ill,_________he must stay at home to look after her.
A./ B.so C.that D.either
3.Though the workers were very tired，_________they went on planting trees.
A.and B.but C./ D.so
4.They didn't watch TV_____they finished their homework.
A.after B.when C.until D.as
课时训练
D
A
C
c
课时训练
5.I'll write to you as soon as I_________Beijing.
A.get to B.arrive
C.will get to D.will arrive
6.We'll have a trip if it_________rain.
A.won't B.will C.don't D.doesn't
7._________you hurry up , we will be late for school.
A.If B./ C.Unless D.When
8.He saves money_________he can buy some birthday presents for his mother.
A.so B.so that
C.such that D.in order
9.—Why are you late for school
—_________ I got up late.
A.Because B.For C.Since D.As
A
D
C
B
A
老师寄语：
To live is to learn,to learn is to better live.
---活着为了学习，学习为了更好的活着。