人教新課標必修三-Unit-4-Astronomy-Grammar主語從句教學課件

1、Subject ClauseSubject Clause學習目標：1. 掌握主語從句的基本概念；2. 能從句中找出主語從句，并翻譯句子；3. 能夠概括出主語從句的引導詞；4. 學會根據(jù)句意選擇恰當?shù)囊龑г~。學習目標：Revision Find the subjects in the following sentences.1. A tree has fallen across the road.2. You are a student.3. To find your way can be a problem.4. Smoking is harmful to you.5. What she sa

2、id is not yet known.6. That we shall be late is certain.7. Its certain that we shall be late.Revision Find the subjects in主語從句在句中充當主語的從句叫做主語從句。主語從句在句中充當主語的從句叫做主語從句。1That he will come is certain.2Whether it will please them is not easy to say.3What seems easy to some people seems difficult to others.

3、4Which side will win is not clear.5Why he did it remains a mystery.6When they will start is not known yet.7How he became a great scientist is known to us all.8Who will take part in the meeting has not been decided.9Whoever breaks the law will be punished.10Where she is from is unknown.Find the subje

4、ct clauses in the following sentences, and translate them.思考：主語從句有哪些引導詞，這些引導詞如何選用？1That he will come is certain.主語從句的引導詞：連詞 that , whether 連接代詞 who(ever), whom(ever), which(ever), what(ever)連接副詞 where ,when ,why ,how 主語從句的引導詞：依據(jù)“缺什么補什么”原則確定正確的連詞。所謂“缺什么補什么”是指句型結構與連詞之間的關系。如果句子中缺主語，指人用who，指物用what；如缺賓語，

5、指人用whom，指物用what；如缺時間狀語用when；地點狀語用where；原因狀語用why；方式狀語用how；定語用what或which；什么都不缺用that。Where he will go is unknown. What you said yesterday is right.That he knows Japanese is known to all.Whether he is coming doesnt matter much.依據(jù)“缺什么補什么”原則確定正確的連詞。所謂“缺什么補什么”Complete the sentences using what, whether, whe

6、re, when， who, why, how or that.1.(_ is needed for success) is your hard work.3.(_ we will go tomorrow )hasnt been decided yet.2.(_ they will arrive )has been told to the teacher.4.(_ can join in the sport meet) is decided by the teacher.5.(_ it will rain or not) is not clear.7.(_ the earth is a sol

7、id ball) is known to us all.WhatWhen/HowWhere/whetherWhoWhetherThat6. (_ the earth is becoming warm) is a good topic for research.Why主語從句作主語時，謂語動詞一般用單數(shù)形式。Conclusion:Complete the sentences using w注 意：What you left are only several old books.What you said is of great importance.Whetherhellcomehereis n

8、otclear.1.“if” 不能引導主語從句，應有“whether”引導。3.主語從句的 “that” 一般不能省。4.“what”引導主語從句時，謂語動詞： 1）常與其后的名詞作表語一致 2）根據(jù)句子的語境而定。4. 主語從句需注意的問題2.主語從句中用陳述語序注 意：What you left are only se 1. _ you dont like him is none of my business. 2. _ he said at the meeting astonished everybody present3. _ the 2000 Olympic Games will b

9、e held in Beijing is not known yet.4. _ well go camping tomorrow depends on the weather.5. _ leaves the room last ought to turn off the lights. ThatWhatWhetherWhetherWhoever選擇恰當?shù)倪B接詞 1. _ you dont like him iMake sentences Its certain .well be late. Is he coming or not ？We dont knowWhat does he want t

10、o tell us?We dont knowWhen will you come back?It doesnt matter.Its certain that we will be late.That well be late is certain.We dont know whether he is coming or not Whether he is coming is not known.We dont know what he wants to tell us.What he wants to tell us is not known.When you will come back

11、doesnt matter.It doesnt matter when you will come back.Make sentences Its certain .I_ he made an important speech at the meeting was true. A. That B. Why C. What D. How 2. _well go camping tomorrow depends on the weather . A If B Whether C That D Where Choose the best choice _ he made an important s

12、peec3. It worried her a bit _ her hair was turning gray.whether B. that C. what D. when4.What I say and think _ none of your business. A. is B. are C. has D have3. It worried her a bit _ heIt + be + 形容詞 that從句It is necessary that 有必要It is important that . 重要的是It is obvious that 很明顯It + be + -ed分詞 that從句It is believed that 人們相信It is known to us/all that . 眾所周知It has been decided that 已經(jīng)決定用it形式主語的that從句有以下四種不同的搭配：It + be + 形容詞 that從句It is neIt + be + 名詞 th