外研版（2019）选择性必修 第四册Unit 5 Into the unknown Using language课件(共17张PPT)

(共17张PPT)
名词性从句
I. Definition 定义
A noun clause is a clause that plays the role of a noun. 在句中起名词作用的从句
II. Types 分类
主语从句 宾语从句 表语从句 同位语从句
What’s past is prologue.
Tomorrow or an accident-- you never know which will come first.
That it will never come again is what makes life so sweet.
I have a dream that one day little black boys and girls will be holding hands with little white boys and girls.
Noun clauses 名词性从句
III. Subordinating conjunctions 连接词
分类 在从句中的作用 常见词
连接词 连接作用，不充当成分 that, whether, if
连接代词 连接作用 + 充当n.成分 what, which, who, whom, whose, whatever....
连接副词 连接作用+ 充当状语 when, where, why, how
I don’t know what you’re talking about.
That I miss you is obvious.
Do you know why you’re learning English
从句成分： 1）不缺任何成分—— 连接词
2）缺主宾表—— 连接代词
3）缺状语意义——连接副词
一、主语从句 在句中作主语的从句叫主语从句。1、连接词引导
u_____ he is still alive is a wonder.
uIt suddenly occurred to him ____ he had left his key in the office.
uThe earth became so violent that it was not clear ____ the shape would last or not. 2、连接代词引导u ____ broke the glass yesterday is not clear.u ____ it was to become was uncertain until between 4.5 and 3.8 billion years ago when the dust settled into a solid globe.3、连接副词引导u ____the dinosaurs disappeared suddenly still remains a puzzle.
That
that
whether
Who
What
Why
用it作形式主语的主语从句
①It＋be＋形容词(necessary/likely/important/certain等)＋that从句
②It＋be＋名词(短语)(a pity/a shame/no wonder等)＋that从句
③It＋be＋过去分词(said/told/reported等)＋that从句
④It＋不及物动词(seem, occur, appear, happen, matter等)＋that从句
(湖北卷)It occurred to him ______ he had an important conference to attend the next morning.
(天津卷)It is obvious to the students _______they should get well prepared for their future.　
在“It＋be＋suggested/advised/ordered/requested/insisted/required...＋that从句”结构中，从句谓语应用“(should＋)动词原形”。
It is suggested that you(should) spend more time in studying English.　
that
that
二、宾语从句 在句中充当宾语的句子叫做宾语从句。
1. 由连接词引导
I think _____ women can reach very high achievements in many fields of science.
He told me (that) he had two sons and _____they both had gone to college.
2. 由连接代词引导
We don’t know ____ will take his place.
Over thousands of years，they began to depend less on _____ could be hunted or gathered from the wild, and more on animals they had raised.
3. 由连接副词引导
Could you tell me ____ you were late for the meeting this morning
that
that
who
what
why
that引导宾语从句时，常被省去，但下列情况下不能省略：
①that从句作介词的宾语时；
He is a good student except that he is a little careless.
②动词后跟有多个that引导的宾语从句时，只有第一个that可以省略，从第二个从句开始that不可省略；
He said (that) he would attend the party and that he would announce a piece of inspiring news.
③that引导的从句位于句首时。
That different countries have different cultures is natural.
it作形式宾语的宾语从句
①动词find/feel/think/consider/make＋it＋宾补(形容词或名词)＋不定式/that从句
②动词hate/like/dislike/appreciate/enjoy＋it＋that从句
③短语动词see to/depend on/rely on＋it＋that从句
④固定搭配take it for granted/owe it to sb.＋that从句
I shall see to it ________ he is taken good care of when you are absent.　
I think it necessary ________we take plenty of boiled water every day.　
that
that
see to it that
一定注意到...; 务必...
三、表语从句 在句中作表语的从句叫表语从句。1、连接词引导
The question is _______ it is worth doing.
The reason why he came late was ______ he got up late.
2、连接代词引导
The problem is ______ will take charge of this shop.
This is _________ my father has taught me—to always face difficulties and hope for the best.
3、连接副词引导
Without his support, we wouldn’t be _________ we are now.
that
whether
who
what
where
其他连接词引导的表语从句
(1)as if/as though引导表语从句
as if/as though意为“好像，仿佛”，其引导的表语从句常跟在系动词(be动词， seem, appear, look, taste, sound, feel, smell等)之后。若表语从句所述的是非真实的情况，从句用虚拟语气；若所述的是事实或是极可能发生的情况，从句用陈述语气。
The thick smog covered the whole city.It was as if a great black blanket _________(be) thrown over it.
(2)because，why引导的表语从句
①This/That/It is why＋表语从句(表结果)，意为“这/那就是……的原因”
②This/That/It is because＋表语从句(表原因)，意为“这/那是因为……”
③The reason why...is that＋表语从句，意为“……的原因是……”
(安徽卷)From space, the earth looks blue.This is _________ about seventy one percent of its surface is covered by water.　
He didn’t work hard.That’s ______ he was fired.
had been
because
why
四、同位语从句 同位语从句说明其前面的名词的具体内容。可用于同位语从句的名词有fact、idea、news、word（消息）、information、truth、doubt、wish、hope、promise、message、advice、suggestion、request、demand、order、problem、question、evidence、proof、sign等。例如：1. 由连接词引导
Do you have any idea _________he is coming or not
Scientists have obtained more evidence _______ plastic is finding its way into the human body.
2. 由连接代词引导
I have no idea ______ he’s talking about.
3. 由连接副词引导
We haven’t yet settled the question ______ we are going to spend the holiday.
whether
that
what
where
whether和if的用法
(1) 引导主语从句、表语从句、同位语从句时一般用whether，不用if。
It’s doubtful ________there will be any seats left.
(2) whether和if引导宾语从句大多数情况下可以互换，但以下情况宜用whether：
①后面直接跟or not时
It remains to be seen _________ or not this idea can be put into practice.
②用于介词后引导宾语从句
It depends on ________ he will help us.　
③ 动词doubt后接宾语从句，肯定句用whether或if，否定句常用that
I never doubted ________she would come.
The doctor really doubts __________ my mother will recover from the serious disease soon.
whether
whether
whether
that
whether/if
易错练习
1（2022新高考II卷）“I don't know ___________ to thank him.”
2（2022年浙江1月）Cobb, for her party, started to ask conference organizers who invited her to speak ___________ she could do so remotely.
3（2021新课标I卷）________is so breathtaking about the experience is the out-of-this-world scenes.
4（2021年北京卷）The poor woman wasn't able to give him any information about ________ she lived．
5（2021年天津卷）What puzzles Lily's friends is ________ she always has so many crazy ideas.
A. whether B. why C. what D. when
6（2021年天津卷）It seemed that I had become ________ my parents had wanted me to be.
A. when B. where C. what D. whether
how
whether/if
What
where
7.(2019全国卷Ⅰ)While they are rare north of 88°，there is evidence ________ they range all the way across the Arctic, and as far south as James Bay in Canada.
8.(2018全国卷Ⅲ)I’m not sure ________ is more frightened, me or the female gorilla(大猩猩) that suddenly appears out of nowhere.
9.(2020全国新高考I）Write a poem about ________ courage, determination, and strength have helped you face challenges in your life.
10.(2018全国卷I）Ten years after my chess class with Ashley, I'm still putting to use ________he taught me.
11.(2018全国卷I）Adults understand ________ it feels like to be flooded with objects.
that
who
how
what
what
They felt _________ it was high tax and low income _________ contributed to the extreme misery of the working people at the bottom of the ladder.
Our school is no longer ________ it was 10 years ago, ________ it was not well equipped.
The exciting moment ________ Gerry will always remember is ________ he approaches the Harbor Bridge and the Opera House.
Set aside _________ you disagree and try to find _________ you have in common.
The policeman analyses the chief reasons _________ some cyclists and pedestrians will get caught in traffic accidents and _________ they should do to prevent them.
Mary was born in 1752 in a rich family in _________ is now the state of Virginia.
I really don’t know _________ I kept the secret papers.
A．where was it
B．it was where that
C．where it was that
D．where was it that
(that)
that
what
when
that
when
where
what
why
what
what
C
Thank you！