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1、Subject Clause,学习目标： 1. 掌握主语从句的基本概念； 2. 能从句中找出主语从句，并翻译句子； 3. 能够概括出主语从句的引导词； 4. 学会根据句意选择恰当的引导词。,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 said is no
2、t yet known. 6. That we shall be late is certain. 7. Its certain that we shall be late.,主语从句,在句中充当主语的从句叫做主语从句。,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. 4Which side will win is not clear. 5Why he did it
3、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 subject clauses in the following sentences, and
4、translate them.,思考：主语从句有哪些引导词，这些引导词如何选用？,主语从句的引导词： 连词 that , whether 连接代词 who(ever), whom(ever), which(ever), what(ever) 连接副词 where ,when ,why ,how,依据“缺什么补什么”原则确定正确的连词。所谓“缺什么补什么”是指句型结构与连词之间的关系。如果句子中缺主语，指人用who，指物用what；如缺宾语，指人用whom，指物用what；如缺时间状语用when；地点状语用where；原因状语用why；方式状语用how；定语用what或which；什么都不缺用t
5、hat。 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.,Complete the sentences using what, whether, where, when， who, why, how or that.,1.(_ is needed for success) is your hard work.,3.(_ we will go tomorrow
6、 )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 solid ball) is known to us all.,What,When/How,Where/whether,Who,Whether,That,6. (_ the earth is becom
7、ing warm) is a good topic for research.,Why,主语从句作主语时，谓语动词一般用单数形式。,Conclusion:,注 意：,What you left are only several old books. What you said is of great importance. Whether hell come here is not clear.,1.“if” 不能引导主语从句，应有“whether”引导。,3.主语从句的 “that” 一般不能省。,4.“what”引导主语从句时，谓语动词： 1）常与其后的名词作表语一致 2）根据句子的语境而
8、定。,4. 主语从句需注意的问题,2.主语从句中用陈述语序,1. _ you dont like him is none of my business. 2. _ he said at the meeting astonished everybody present 3. _ the 2000 Olympic Games will be held in Beijing is not known yet. 4. _ well go camping tomorrow depends on the weather. 5. _ leaves the room last ought to turn of
9、f the lights.,That,What,Whether,Whether,Whoever,选择恰当的连接词,Make sentences,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 w
10、ill come back doesnt matter.,It doesnt matter when you will come back.,_ 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,3. It worried her a bit _ her hair wa
11、s turning gray. whether B. that C. what D. when 4.What I say and think _ none of your business. A. is B. are C. has D have,It + be + 形容词 that从句,It is necessary that 有必要 It is important that . 重要的是 It is obvious that 很明显,It + be + -ed分词 that从句,It is believed that 人们相信 It is known to us/all that . 众所周知 It has been decided that 已经决定,用it形式主语的that从句有以下四种不同的搭配：,It + be + 名词 that从句,It is common knowledge that 是常识 It is a surprise that . 令人惊奇的是 It is a fact that 事实是,It + 不及物动词 that从句,It appears that 似乎 It happens that . 碰巧 It occurred to me that 我突然想起,
