人教版（2019）选择性必修第一册Unit 5 Working the Land名词性从句课件(共20张PPT)

(共20张PPT)
高中英语
Unit 5
WORKING THE LAND
名词性从句
名词在英语句子中可以充当主语，宾语，表语和同位语；
名词性从句其实就是用从句充当一个名词的作用，在更大的句子中充当主语，宾语，表语和同位语，这便有了主语从句，宾语从句，表语从句和同位语从句。
主语从句的定义：
在句中充当主语的从句叫做主语从句。
My job is important.
What I have done is important.
主语
引导名词性从句的连接词有从属连词、连接代词和连接副词。
从属连词 （不做成分） that、whether/ if
连接代词 （主语，宾语，表语或定语） who, whoever, whom, whomever, what, whatever, which, whichever, whose,
连接副词 （状语） when, whever, where, wherever, why, how, however
知识点：引导名词性从句的连接词
知识点一：从属连词： that、whether 、 if
在引导名词性从句中只起引导作用，且不充当任何成分。
1. That price will go up is certain.
2. It doesn’t matter whether/if Mary will come or not.
that不做成分，无意义
whether/if不做成分，意为“是否”
1. ______ I had won the match made my parents excited.
2. ______ she will agree with me doesn't matter.
3. I wonder _____ the answer is right.
That
whether
if
知识点二：连接代词：who, whoever, whom, whomever, what, whatever, which, whichever, whose
在引导名词性从句中不仅起连接作用，还充当成分(主宾表定)。
1. Who will attend the match has not been decided.
2. Don’t ask about what the meeting is for.
3. Whoever does best will get the prize.
who引导的主语从句
what引导的宾语从句
whoever引导的主语从句
1. _____ my teacher said encouraged us.
2. _____ will be sent to attend the meeting has not been decided.
3. ________ she did was right.
4. ________ comes to my class will be welcome.
5. It made us sad _____ a small house they had.
6. ________ you invite is welcome.
What
Who
Whatever
Whoever
what
Whomever
知识点三：连接副词：when, whever, where, wherever, why, how, however
在引导名词性从句中不仅起连接作用，还充当成分(状语)。
1. Where Lucy comes from is unknown.
2. Why Mr. Smith is late for the meeting has not been found out.
where引导的主语从句
why引导的主语从句
1. _________ the lost child went is still a puzzle.
2. ______ he will be back depends on the weather.
3. Nobody can explain the thing _____ he suddenly cried.
指出画线句子是什么从句，引导词在从句中作什么成分？
4. Tell me why you don’t like school.
5. Where a person lives doesn’t matter.
6. That is why Tom turned me down.
Wherever
When
why
宾语从句，why在从句中作原因状语
主语从句，where在从句中作地点状语
表语从句，why在从句中作原因状语
知识点四：It作形式主语
在引导名词性从句中为了避免头重脚轻，通常用it作形式主语，用以保持句子的匀称。
1. Whether he will agree with me doesn’t matter.
2. It doesn’t matter whether he will agree with me.
whether引导的主语从句
it作形式主语，真正的主语为whether引导的从句
形式一：It be adj. that从句
用于该句型中的形容词常见的有：necessary,right, important, obviuos, possible, likely, certain等
eg. It is obvious that we are sure to win the match.
It is important that we should learn English well.
It is essential that we should estimate the price of the coat.
形式二：It be n.(名词词组) that从句
用于该句型中的n.(名词词组)常见的有：a pity, an honour, no wonder, a fact, a wonder, a surprise, good news等
eg. It is a pity that you didn’t pass the exam.
It is no wonder that you have caught a cold.
It is good news that he has recovered.
形式三：It be 过去分词 that从句
常见的该句型有：
It be said that...(据说...)
It be reported that...(据报道...)
It be suggested that...(人们建议...)
It be hoped that...(人们希望...)
It be believed that...(据查明...)
1. It is reported that more than 100 workers were killed in the accident.
2. It is considered that women live longer than men.
3. It is pointed out that the professor has already worked out the difficult problems in mathematics.
形式四：It be 特定动词 that从句
常见的该句型有：
It happens that...(碰巧...)
It occurred to sb. that...(某人突然想起...)
It hit sb. that...(某人突然想起...)
It seems that...(看起来...)
1. It happened that John went to school when I called him.
2. It occurred to me that he had been to Beijing.
3. It seems that my headteacher, Mr. Smith, is going to the office.
1. ____is a fact that Chinese is being accepted by more and more foreign friends.
2. It is uncertain _______ my uncle will come to my grandpa’s birthday party or not.
3. _______ he made an important decision at the meeting was true.
4. ____is known to us all that China is a developing country.
5. Every year, _______ does best in this game will win the first prize.
随堂练习
It
whether
That
It
whoever
1. __________________(可能) my dad will go to Beijing tomorrow.
2. __________________(很明显) this way is useful.
3. _______________(很遗憾) my brother didn’t pass the exam.
4. ____________________(据报道) 20 kids were killed in the accident.
5. _____________________(建议)we should eat more vegetable and do more exercise.
6. __________________(碰巧) I came into the office at that time.
7. _______________________(我突然想起) I forget to send the letter.
It is possible that
It is obvious that
It is a pity that
It is reported that
It is suggested that
It happened that
It hit me that
谢谢大家