主语从句公开课精品课件图文.ppt
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1、Her job is teaching.What she does is teaching.在句中充当主语的从句在句中充当主语的从句叫做主语从句。叫做主语从句。定义定义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 remains a mystery.6When they wi
2、ll 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.连接词连接词that 无实际意义 只起连接作用是否连接词如何选用?1.1.从句中什么成分都不缺,用从句中什么成分都不缺,用 2.2.从句中需要表从句中需要表“是否是否”的的词词,用,用3.
3、3.其他,缺什么其他,缺什么补补什么什么连接词的选用连接词的选用thatwhether如缺如缺“哪一个哪一个”的意思,的意思,用用 which主语从句的连接词:主语从句的连接词:连接词连接词 that,whether 连接代词连接代词 who(ever),whom(ever),which(ever),what(ever)等等连接副词连接副词 where,when,why,how That he will refuse this piece of advice is impossible.It is impossible that he will refuse this piece of adv
4、ice.It作形式主语itIt作形式主语的四种常用句型It+be+名词+that从句It+be+形容词+that从句It+不及物动词+that从句It+be+动词的过去分词+that从句 1)It is+n.+从句从句 It is a pity(遗憾)/a fact/a surprise that *_(很遗憾很遗憾)we lose the match.*_(这是事实这是事实)he cheated in the exam.It is a pity thatIt is a fact that2)It is+adj.+从句从句 It is possible that.Its certain tha
5、t *_(很可能很可能)she will come back tomorrow.It is possible that3)It+不及物动词不及物动词+从句从句 It happened that.刚好刚好;碰巧碰巧 It occurred to me that 我突然想起我突然想起*_(刚好刚好)I came into the office at that time.*_(我突然想起我突然想起)I forget to send the letter.It happened thatIt occurred to me that4)It+be+过去分词过去分词+从句从句 It is said tha
6、t.It is known to all that.It is reported that.*_(据报道据报道)20 people were killed in the accident.It is reported that主语从句的虚拟语气主语从句的虚拟语气表表“应该,惊讶、惋惜、遗憾应该,惊讶、惋惜、遗憾”等意义等意义It is important/natural/necessary/strange that.谓语形式为谓语形式为:(should)+V.原形原形 eg.很奇怪,他竟没有来。很奇怪,他竟没有来。It is strange that_.he should not come表示
7、表示“据建议、据要求、据命令据建议、据要求、据命令”It+be+suggested/advised/ordered/requested/commanded/insisted/required that谓语形式为谓语形式为:(should)+V.原形原形据命令,所有乘客必须接受搜查据命令,所有乘客必须接受搜查It was ordered that all the passengers_.(should)be searchedIf he will come to the meeting is not certain.Whether he will come to the meeting is no
8、t certain.It is not certain if he will come to the meeting.It is not certain whether he will come to the meeting.看句子正误,并总结规律看句子正误,并总结规律Conclusion:引导引导主语从句在主语从句在句首只能用句首只能用whether,有有it作形式主语的作形式主语的whether/if都可以都可以.主语从句的其他规则主语从句的其他规则When he will come are a puzzle(谜).When he will come is a puzzle.看句子正误,并
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