2023届高考英语二轮复习状语从句的省略课件(共12张PPT)

(共12张PPT)
1. While walking the dog, you were careless and it got loose and was hit by a car.
While you were walking the dog, you were careless and it got loose and was hit by a car.
2. While crossing the road, you should be careful.
While you are crossing the road, you should be careful.
在时间、条件和让步等状语从句中, 如果从句主语和主句的主语一致, 且从句的谓语含有be动词的某种形式, 从句的主语和be动词可以省略, 并且要同时省略。
状语从句的省略
While visiting the butterfly exhibition in the museum，I came across one of my former fellows.
Although astonished at the outcome of the election，Mr Zhang didn＇tsay anything before his fellows.
(4)省略后的句型：连词+现在分词/过去分词/介词短语/形容词
If involved in this case,you will be punished.
If necessary, you can choose me to make the presentation.
状语从句省略句的结构：
连词+分词（-ing、-ed)/形容词
特点：
1.从句主语与主句主语相同
2.从句中谓语动词含有be动词
以下为约定俗成的省略形式：
if so如果是这样的话
if not如果不是这样，否则
if ever如果曾经有的话
if any如果有的话
if necessary如果有必要的话
if possible如果可能的话
when necessary 在必要的时候
一般说来省略现象多出现在下列五种状语从句中：
1.由when ,while ,as ,before, after, till, until, once等引导的时间状语从句；
2.由whether ,if ,unless 等引导的条件状语从句；
3.由 though ,although ,even if ,whatever等引导的让步状语从句；
4.由 as ,than 等引导的比较状语从句；
5.由as,as if ,as though 等引导的方式状语从句.
[熟读深思] 阅读下列句子, 指出划线句中省略的单词
1. The country singers were playing the guitar while singing.
(while 后省略了_________ )
they were
2. When asked to answer questions, you should stand up.
(When 后省略了________ )
3. He will help us do it, if necessary.
(if 后省略了 _____ )
you are
it is
当从句的主语是 it,谓语动词中又含有系动词be 时 ,可以把it和系动词be一起省略.
if necessary/possible/if true/so/not
[灵活运用]
When 1_________(travel)in Shanghai, I happened to meet my friend. We chatted for a little while. Even though
2 ______ (invite), I didn’t have a drink with him because I was in such a hurry.
invited
traveling
单句语法填空
①Though_______ (criticise) by the head teacher,Sandy was still grateful to Mr White.
②Though______ (annoy)at Tom's words,she forced a smile.
There are some health problems that,when not ________(treat)in time,can become bigger ones later on.
criticised
annoyed
treated
④[天津二考]Harriet Stowe，mother of six，wrote parts of Uncle Tom’s Cabin while ___________(cook).
⑤[202l·全国乙卷]I was considering this while _______(work)as a nurse just a few weeks ago.
cooking
working
完成句子
⑥___________(如果可能的话) ，I will learn to carve.
⑦__________________(在必要的时候) ，I will step out of my comfort zone.
⑧ __________________(如果有必要的话)，we will grow some waterlily in the pond，which is located at the backof our house.
If possible
If necessary
When necessary