1、主语从句主语从句Subject Clause 主语从句主语从句What can you see on the screen?What can you see on the screen?What I can see on the screen is What I can see on the screen is areareWhat do they want?What do they want?What they want is/are What they want is/are What does he need?What does he need?What he needs is/areW
2、hat he needs is/areremains a mystery.remains a mystery.Who he isWho he is remains a mystery.remains a mystery.What the boy is thinking aboutWhat the boy is thinking about remains a remains a mysterymystery.Which road Which road he will choosewill choose remains remains a mystery.a mystery.remains a
3、mystery.remains a mystery.Where/How I will goWhere/How I will go remains a mystery.remains a mystery.Why dinosaurs disappearedWhy dinosaurs disappeared remains a mystery.remains a mystery.What I can see on the screen is a pig.What I can see on the screen is a pig.What he needs are new clothes.What h
4、e needs are new clothes.Who he is remains a mystery.Who he is remains a mystery.Which road he will choose remains a Which road he will choose remains a mystery.mystery.Where/How I will go remains a mysteryWhere/How I will go remains a mystery做主语用的名词性从句，因其在复合句中做主做主语用的名词性从句，因其在复合句中做主语，又称主语从句语，又称主语从句.一
5、.概念What he needs are new clothes.What he needs are new clothes.That he will come to lanzhou surprised That he will come to lanzhou surprised me.me.二二.连接词连接词1.从属连词：从属连词：that，whether.1)that 引导主语从句只起引导作用，本身无引导主语从句只起引导作用，本身无实际意义，在主语从句中不充当任何成分，实际意义，在主语从句中不充当任何成分，但不能省略。但不能省略。That she left him cut him to t
6、he heart.That he will come is certain.2)whether引导主语从句时，有实际的引导主语从句时，有实际的意义（意义（“是否是否”），但不做句子的任何），但不做句子的任何成分。成分。Whether it will please them is not easy to say.Whether shes coming or not doesnt matter too much.2.连接代词连接代词who，what，which,whatever,whichever,whoever 等 What seems easy to some people seems dif
7、ficult to others.Which side will win is not clear.3.连接副词连接副词when，where，how，why.Why he did it remains a mystery.When they will start is not known yet.How he became a great scientist is known to us all.主语从句可以前置，也可以后置。后置时，用主语从句可以前置，也可以后置。后置时，用it做形式主语，而把主语从句放在句末。做形式主语，而把主语从句放在句末。(为避为避免头重脚轻这种现象的出现）免头重脚轻这
8、种现象的出现）三.位置What he needs are new clothes.What he needs are new clothes.It is a pity that he cant come to lanzhouIt is a pity that he cant come to lanzhou.1.It+be+adj.+that从句从句四.it做形式主语时，主语从句的结构It is true that I told her everything.It is certain that she will fail in her exam.2.It+be+名词或名词词组名词或名词词组.+
9、that从从句句It is a pity that we cant go.It is an honour that I was invited to attend the meeting.3.It+be+过去分词过去分词.+that从句从句It is said that Mr.Green has arrived in Beijing.It is reported that China has sent another manmade satellite into space.常用的句型有：1.1.It is said that.2.2.It is reported that.3.It is b
10、elieved that.4.It is known to us all that.4.It+seems/happened+that从句从句It seems that she doesnt like her math teacher.It happened that I was out that day.5.It+doesnt matter(makes no difference）+主语从句主语从句It doesnt matter whether she will come or not.It makes no difference where we shall have the meetin
11、g.1.What you left are only several old books.2.What you said is of great importance.1.“if”引导主语从句时，应该用引导主语从句时，应该用it做形式主语，做形式主语，主语从句放在句末，其余情况应由主语从句放在句末，其余情况应由“whether”引导。引导。3.主语从句的主语从句的“that”一般不能省。一般不能省。4.“what”引导主语从句时，谓语动词：引导主语从句时，谓语动词：1）常与其后的名词作表语一致）常与其后的名词作表语一致 2）根据句子的）根据句子的语境而定。语境而定。2.主语从句中用陈述语序主语
12、从句中用陈述语序注注 意：意：Practice 1._ 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 3._ is known to us all _America is a developed country.A.Which,that B.As,what C.It,that D.It,what4.Its known to u
13、s all _ a form of energy.A.water is B.that water is C.is water D.that water to 5.It worried her a bit _ her hair was turning gray.A.whether B.that C.what D.when 1.Where shall we spend the holiday isnt decided.2.You have made a mistake is a fact.3.That is certain that we can win.4.No matter who leave
14、s the room last ought to turn off the lights.5.If the policemen will come is not certain.we shallThat you haveIt isWhoeverwhether改错练习改错练习6.It is say that he was a famous writer.7.It is seemed that it is going to rain soon.8.That is a fact that she won the first place.9.Who leaves the room last ought
15、 to turn off the lights.10.It is important what a student learns a foreign language.said seemsIt WhoeverthatSUMMARY 1.引导主语从句的词有连词引导主语从句的词有连词that,whether；连接代词连接代词who,whose,whom,whoever,what,which等；连等；连接副词接副词where,when,whenever,wherever,how,why等。等。2.有时用有时用it作形式主语，将主语从句后置作形式主语，将主语从句后置,这样做是为这样做是为了避免句子头重
16、脚轻。了避免句子头重脚轻。3.常用句型如下：常用句型如下：It+be+名词名词+that 从句从句 It+be+形容词形容词+that从句从句 It+be+动词的过去分词动词的过去分词+that从句从句 It+seems/happens+that从句从句Homework一一.Revise Subject Clause we learned today.二二.翻译句子 1.我喜欢的东西是篮球。2.汤姆要来我们学校让我们每一个人都很 兴奋。他是否要去国外还没决定。What pains us trains us.What pains us trains us.What doesnt kill us makes us stronger.What doesnt kill us makes us stronger.What hurts us the most teaches us the best.What hurts us the most teaches us the best.使我们痛苦的东西在真正锻造我们。使我们痛苦的东西在真正锻造我们。没有要我们命的事情让我们更强大。没有要我们命的事情让我们更强大。伤害我们最深的教会我们最多。伤害我们最深的教会我们最多。Thank you very much.Good bye!
