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1、主语从句,Who will win the match is still unknown. I want to know what he has told you. The fact is that we have lost the game. The news that we won the game is exciting.,主语从句,宾语从句,表语从句,名词性从句的作用相当于名词，因此主语从句、表语从句 、宾语从句和同位语从句分别作主句的主语、表语、宾语和同位语。,同位语从句,Noun Clauses (名词性从句),Subject Clause (主语从句),Appositive Cl
2、ause （同位语从句）,Object Clause （宾语从句）,Predicative Clause （表语从句）,Is the moon a planet ? This question is _if students are to show that they understand the nature of _. Some scientists think that the earth _ the moon because the moon circles our planet. Others believe that the moon _ before the earth was
3、formed. They think that earlier in time it travelled through space as a small planet which was caught by the earths gravity. _, it goes around our planet. The evidence for this theory is that the _ that make up the rocks on the moon seem to be different from those on earth. What is clear is that the
4、 moon is smaller than the earth and this _ it _ escaping from the earth. Although its origin may still be a _, the moon can never be anything more than a satellite of the earth.,fundamental,astronomy,gave birth to,existed,As a result,atoms,prevents,from,puzzle,Is the moon a planet ? This question is
5、 _if students are to show that they understand the nature of _. Some scientists think that the earth _ the moon because the moon circles our planet. Others believe that the moon _ before the earth was formed. They think that earlier in time it travelled through space as a small planet which was caug
6、ht by the earths gravity. _, it goes around our planet. The evidence for this theory is that the _ that make up the rocks on the moon seem to be different from those on earth. What is clear is that the moon is smaller than the earth and this _ it _ escaping from the earth. Although its origin may st
7、ill be a _, the moon can never be anything more than a satellite of the earth.,fundamental,astronomy,gave birth to,existed,As a result,atoms,prevents,from,puzzle,o,o,o,o,p,s,p,主语从句： 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，引导主语从句的有连词that ，whether， 连接代词who ，what ，which， 连接副词when，where， how， why等。,1）从属连词：that， wh
8、ether等. that 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，但不能省略。,That people cut down too many trees destroyed the balance of nature. Whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved.,.,It was not clear whether the solid shape would last o
9、r not.,Subject Clause,Subject,Formed Subject,Whether the solid shape would last or not was not clear.,Real,引导主语从句在句首只能用whether, 有it作形式主语的whether/if都可以.,Conclusion:,if,If,注意: 由that 引导的主语从句有时为了使句子结构平衡, 避免 “头重脚轻”, 常用 it 作形式主语, 而把从句放在后面。 例如:,1. That he will refuse this piece of advice is impossible. _ _
10、 2.That they should like each other is natural. _,*it为形式主语,It is natural that they should like each other.,It is impossible that he will refuse this piece of advice.,这样就构成了下面一些常用句型: 1) It is + n. +从句 It is a pity/shame that. 遗憾的是 It is a surprise that令人惊奇的是 It is a fact that 是事实 It is common knowled
11、ge that 是常识 *_(很遗憾)we lost the match. *_(这是事实)he cheated in the exam.,It is a pity that,It is a fact that,2) It is + adj. +从句 Its certain that 肯定 It is possible that. 很可能 It is unlikely that. 不可能 It is obvious that 很明显 It is necessary important natural. that *_(很可能)she will come back tomorrow. *_(很明
12、显)this measure is effective.,+(should) +do,It is possible that,It is obvious that,3) It +不及物动词+从句 It happened that. 碰巧 It occurred to me that我突然想起 *_(刚好)I came into the office at that time. *_(我突然想起)I forget to sent the letter.,It happened that,It occurred to me that,4) It + be +过去分词+从句 It is said t
13、hat. 据说 It is known to all that. 众所周知 It is reported that. 据报道 It is believed that.据信;人们相信 It is suggested that + (should）do. 建议 It must be admitted that必须承认 It cannot be denied that 不可否认 It must be pointed out that需指出的是 *_(据报道)20 people were killed in the accident. *_(建议)we should eat more vegetabl
14、e and do more exercise.,It is reported that,It is suggested that,：They should like each other is natural. ：That they should like each other is natural. ：It is natural that they should like each other.,：If Mary really heard him is really doubtful. ：It was doubtful if Mary really heard him.,T or F que
15、stions,2.连接代词who ，what ，which, whatever, whichever, whoever,What many scientists believe is that the continued presence of water Who will take part in the meeting has not been decided. Whoever breaks the law will be punished. Which student will win the first is uncertain.,3)连接副词when，where， how， why等
16、。,Why they suddenly disappeared still remains a mystery. When they will set off is not decided. Where she is from is unknown. How we will paint the house has not been decided.,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 )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 c
