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1、主语从句学案【学习目标】1、学习名词性从句中的主语从句 2、掌握主语从句引导词的分析和确定 【课前复习】1名词性从句包括_ 、_ 、_、_ 2. 宾语从句：从句在句中充当宾语成分（可以作谓语动词、介词、不定式等 非谓语动词的宾语）连词：that, whether，if , who, what, which, who, what, when where, why, how 1) I think _watching TV too much is bad for peoples heath.2) I wonder _you can do me a favor.3) I dont know _ he
2、is.4) Can you tell me _the nearest post office is?【课堂活动】Step 1 寻找主语指出下面划线部分在句中做什么成分? 由何种语法成分充当？A tree has fallen across the road. _You are a student. _To find your way can be a problem. _S moking is bad for you. _T hat we shall be late is certain. _【合作探究】主语是指句子说明的人或事物,一般位于_，可以做 主语的词有_，还有动词不定式，【思考】动名
3、词和也可以做主语。要找出主语从句，需要先找出主句的_。S tep 2 划出主语从句, 初步识别主语从句T hat the earth travels round the sun is a well-known fact. Whether the artist can do it or not is uncertain.Which side will win is not clear.Who will do it has not been decided yet.Whose bag it is is not clear.When and where the test will be given
4、is not yet decided. Why he did it remains a mystery.How he became a great scientist is known to us all.【思考】主语从句有哪些引导词？连接词:连接代词：连接副词：Step 3 学习主语从句主要连接词用法1）连接词:That：That the baby could walk made the parents very happy.总结: that 引导主语从句只起 何成分，但不能 。作用，本身无 ，在主语从句中任Whether：Whether wild life can be well prot
5、ected is of great importance.总结: Whether 在主语从句中有 ，意为 ，但不担任任何 ，不能与替换，不能 。2 )连接代词:1 What he wants to tell us is not clear.2 Whose car was stolen is unknown.3 Which plan is better should be discussed. Whom the teacher will choose remains a question. Who you are is none of my business.总结: 连接代词有, 有 ，且在句中
6、担任语，语，语或语。3）连接副词 :1 Why dinosaurs died out remains a puzzle.2 When the sports meeting will be held has not been decided. Where the Amber Room is now remains unknown. How gold was found there is not clear.总结:连接副词担任语。,有 ，且在从句中Step 4 练一练一、将下列句子合并为一句:1. He will come here. It is certain.2. Will it have l
7、essons tomorrow? It is unknown.3. What will he do after graduation? It is a question.1 When will the scientist give a report? It is still a question.2 Why is they earth becoming warmer? It is an important topic to scientists.二、用正确的连接词填空1. he will go to the party or not is unknown.2. _ I want to say
8、is yes.3. _ the earth goes around the sun is well known.4. _ the plane will arrive in London is uncertain.5. _ will be our monitor is hard to say.1. _ I will travel has not been decided三，找出下列主语从句中的错误，并总结规律例 1. When will he come is not known. ,规律一、主语从句一律用_ ，即_在前，_在后。 例 2. He will not come to the meeting this evening is true.规律二、连词 that 在从句中无实际意义，但_ 。例 3. If the meeting will be put off has not been decided yet.规律三、_可以引导主语从句，放在句首，但_不能。 例 4. When he will come are a puzzle.规律四、含主语从句的主句谓语动词多用_ 。例 5 1）What he needs is that book. 2）What he needs are some books. 规律五、what 引导的主语从句，可根据_决定主句动词的单复数形式。