《主语从句开课》PPT课件.ppt

Noun clauses as the subject,主语从句,基本概念,什么是主语,主语：句子说明的人或事物,一般位于_。,句首,I like English.The train left.,Jane is good at playing the piano.To see is to believe.Smoking is bad for health.What he has said is true.,找出主语,(名词),（不定式）,（动名词）,(从句）,That he will succeed is certain.Whether he will come makes no difference.What we need is more time.,找出主语从句,Tip:先找谓语,主语从句(Subject Clause),在句子中充当主语的就是主语从句。,他通过了考试让老师很高兴。He passed the exam.It made the teacher happy.That he passed the exam made the teacher happy.,理解主语从句,他何时要来还不清楚。When will he come?It is not clear.When he will come is not clear.,理解主语从句,That he will come is certain.Whether he will come is uncertain.,引导词,1)从属连词that和whether：,_不做成分，无意义，不能省略。whether 不做成分，表“_”。,that,是否,引导词,连接代词Who What、Which Whoever Whatever Whichever whatever=anything thatwhoever=anyone who,谁,什么,所的,的样子,哪一个,无论谁,无论什么,无论哪一个,引导词,连接副词When Where how Why,什么时候,在哪里,如何,为什么,It is certain that he will win the match.,That he will win the match is certain.,3.注解：一般来说主语从句都是放在,但有时为了使句子,避免”头重脚轻”,常用 作，从而把主语从句放在,句首,保持平衡,it,形式主语,后面,1.That we shall be late is certain.Its certain that we shall be late.2.That the earth is round is known to all.3.That you missed the chance is a pity.,It is a pity that you missed the chance.,Its known to all that the earth is round.,这样就构成了下面一些常用句型:1)It is+n.+that It is a pity/shame that.It is a surprise that It is a fact that It is common knowledge that*_(很可惜)we lost the match.*_(这是事实)he cheated in the exam.,It is a pity that,It is a fact that,可惜的是,令人吃惊的是,事实是,是常识,2)It is+adj.+that Its certain that It is possible/likely that.It is obvious/clear that It is true that It is necessary important natural.that,sb+(should)+do,肯定,很可能,很明显,的确,1.的确我犯了个错误。It is true that I made a mistake.2.我们有必要学习英语。It is necessary that we should learn English.,3)It+不及物动词+that It happened that.It occurred to sb that It appears/seems that It turned out that,碰巧,某人突然想起,似乎，好像,原来,1.好像是我错了。It appears that I am wrong.2.碰巧他得去参加一个会议。It happened that he had to attend a meeting.,4)It+be+过去分词+that+从句 It is said that.It is known to all that.It is reported that.It is believed that.It is suggested that+(should）do.*_(据报道)20 people were killed in the accident.*_(建议)we should eat more vegetable and do more exercise.,It is reported that,It is suggested that,据说,众所周知,据报道,据相信;人们相信,建议,主语从句的规律,例1.When will he come is not known.,规律一、主语从句一律用陈述语序，即主语在前，谓语在后。,正：When he will come is not known.,例2.He will not come to the meeting this evening is true.,正：That 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，但不能省略。,例3.If the meeting will be put off has not been decided yet.,正：Whether the meeting will be put off has not been decided yet.,规律三、whether 可以引导主语从句，放在句首，但if不能,例4.When he will come are a puzzle.,正：When he will come is a puzzle.,规律四、主语从句的谓语动词多用 单数第三人称形式。,When the meeting will begin _(have)not been decided yet.,has,When they will start and where they will go _(be)still unknown.,When and where the meeting will begin _(have)not been decided yet.,are,has,例5 1.What he needs _(be)that book.2.What he needs _(be)some books.,规律五、what 引导的主语从句，可根据 表语决定主句动词的单复数形式。,is,are,请拿出导学练,