人教版（2019）选择性必修 第二册Unit 1 Science and Scientists Learning about language 课件（共22张）

(共22张PPT)
Period 2 Learning about language
The Predicative Clauses
Unit 1 Science and Scientists
Learning Aims
1. Enable the students to master the usage of predicative in this unit.
2. Enable the students to use the predicative patterns flexibly.
3. Train the students to apply some skills by doing the relevant exercises.
语法感知
感知以下课文原句，补全方框下的小题
1.One theory was that bad air caused the disease.
2.Another was that cholera was caused by an infection from germs in food or water.
3.The truth was that the water from the Broad Street pump had been infected by waste.
以上3个句子中的加颜色部分都是从句，这些从句在词性上相当于一个 ，故被称作 从句，而且从句作 ，所以又被称作 从句。
名词
名词性
表语
表语
【归纳用法】
1.概念：在主从复合句中，相当于名词的从句被称为名词性从句。
2.分类：名词性从句包括：主语从句、宾语从句、表语从句和同位语从句。
3.连接词
项目 连接词 意义 在句中的功能
连词 that 无意义 不充当成分
whether 是否 不充当成分
语法精析
连接 代词 who(ever) (无论)谁 主、宾、表
whose 谁的 定
what(ever) (无论)什么 主、宾、表、定
which(ever) (无论)哪个 主、宾、定
连接 副词 when(ever) (无论)何时 时间状语
where(ver) (无论)何地 地点状语
how(ever) (无论)怎么 方式状语
why 为什么 原因状语
【观察例句】
1.(2023·新高考Ⅰ卷)The key finding of the study was that when crowds were further divided into smaller groups, the averages from these groups were more accurate... 这项研究的关键发现是，当人群被进一步划分时，这些小组的平均值更准确。
2. That is why he was late for class again. 那就是他又一次上课迟到的原因。
【归纳用法】
主语+系动词+引导词+简单句（表语从句）
系动词: be, look, remain, seem等。
引导词
连接词： that/whether/as if/ as though
连接代词：who/whose/which/what
连接副词：when/where/why/how
定义：在主从复合句中充当表语的从句叫做表语从句。表语从句和主语指同一内容， 它对主语进行解释，说明，使主语的内容具体化。
表语从句之引导词
【观察例句】
1.(2024·浙江1月高考)The most obvious advantage of online learning is that you can study anywhere and anytime.
2.(2023·全国甲卷)What we discovered is that it’s unwise to judge what you eat only by its appearance.
3. The reason why he has to go is that his mother is ill in bed.
4. My advice is that you (should) practise speaking English as often as possible.
【归纳用法】
that在表语从句中既不充当成分,又没有意义，且不可以省略。在表示“建
议，劝说，命令”的名词idea, suggestion, request, proposal 等后面的表语从
句中，谓语动词用“should+动词原形”，should可以省略。
引导词的用法 (that)
what 在表语从句中充当______________ 表示____________________________.
1. The question is what caused the accident.
2. That mountain is no longer what it used to be .
3. What he told you was what
had been discussed at the meeting.
主语、表语、宾语
什么，什么样子，或所……的（人或事）
引导词的用法 (what)
主语
表语
宾语
who 在表语从句中充当______________表示____.
The problem is who could do the work.
2. My trouble is who (whom) I can turn to.
主语、宾语或表语
谁
引导词的用法 (who)
主语
宾语
[即学即练]——用that, who /whom, what填空
1.The problem is _________ we can get to replace her.
2.(2024·浙江1月高考)If most of their customers are happy to buy larger quantities, that’s ________ they’ll promote.
3.The question is _______ caused the accident.
4.What gave you the idea______he’d be here
who/whom
what
what
that
whether在表语从句中表 ______ ,但_______句子的成分。
1.What the doctor really doubts is whether my mother will recover from the serious disease soon.
2.The question is whether it is worth doing.
是否
引导词的用法 (whether )
不充当
[名师点津]　if不能引导表语从句
当表语从句中主语、宾语、表语具备，但是还是要表示疑问含义，可以判断句子中缺少状语，常常用相应的特殊疑问词引
导，有 why 表 , when表 , where表 , how表 等。
This is how he did it.
That is why the brothers wanted to make a bet.
That’s why we’ve given you the letter.
引导词的用法(why/when/where/how)
为什么
在…时候
在哪里
怎么样
[即学即练]——用 whether,when,why, how填空
1.That’s_______ I lefo so early.
2.The problem was __________he could come on time.
3. The first time we met each other was _____ we studied in that school.
4. The trouble is _____ we can master modern science and technology in a short time.
why
whether
when
how
【观察例句】
1.I didn't phone her, and that was why she got angry with me.
我没有给她打电话。那就是她对我生气的原因。
2.I didn't phone her, and that was because I got angry with her.
我没有给她打电话。那是因为我生她的气了。
【归纳用法】
why 和 because 引导的表语从句的区别：
That's because... 意为“那是因为·····”，强调原因；
That's why... 意为“那是······的原因”，强调结果。
why 与because 引导表语从句的区别
1.That is .
那就是我想让你在这儿工作的原因。
2.I was late for school this morning. last night.
今天早上我上学迟到了。那是因为我昨晚睡得太晚了。
why I want you to work here
That's because I stayed up too late
Predicative is used ______ the link verb.
behind
S+V+P
link verb
Predicative 表语
A sentence which is used as predicative is Predicative Clause(表语从句).
①be动词;
②感官动词：sound, taste,smell, look, feel;
③表示变化的词：go,get, turn, become.
总结
Ⅰ.Fill in the blanks.
1.The reason for your mistake is _______ you lack confidence in yourself.
2.The problem is __________ the air pollution can be controlled.
3.I don't like you. That is _________ you are so lazy.
4.That was ____________ we camped last time.
5.I'd like to start my own business --- that's _______ I'd do if I had the money.
Exercise
that
whether
because
where
what
Ⅱ.补全句子
1.The fact was 　.
事实是他没有做真正的努力。
2.The question is 　　 .
问题是这部电影是否值得看。
3.Now she has known Millie for years.
现在看起来好像她认识米莉已有好多年了。
4.My advice is as often as possible.
我的建议是你尽可能经常地练习说英语。
5.That’s .那就是我第一次遇见她的地方。
that he didn't really try
whether the film is worth seeing
it seems as though/if
that you (should) practise speaking English
where I first met her
Ⅲ.语法填空(用适当的连接词填空)
　　Everyone knew 1. Wendy was a famous writer，but no one knew 2. she came from and 3. she was born in 1961 was still a mystery. 4. they did know was 5. she was loved by poor people because she always helped 6. was in need of money. Wendy was generous and helpful，but some people thought she was chasing fame. Wendy said she didn’t understand 7. they were so narrow-minded，but it didn’t matter 8. others thought of her. She just wanted to do
9. she thought was right. She thought that was 10. the meaning of life lied.
that
where
whether
What
that
whoever
why
what
what(ever)
where
It is never too late to mend.
亡羊补牢，为时未晚。