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1、單擊此處編輯母版標(biāo)題樣式,單擊此處編輯母版文本樣式,第二級,第三級,第四級,第五級,*,*,Noun clauses as,the subject,主語從句,preparation,What part does the underlined part serve as in each sentence?,A tree,has fallen,across the road.,You,are,a student,.,To find your way,can be,a problem.,Smoking,is,bad for you.,What she said,is,not yet known.,T

2、hat we shall be late,is,certain.,It,is,certain,that we shall be late.,主語,名詞充當(dāng)主語,人稱代詞充當(dāng)主語,不定式充當(dāng)主語,動名詞充當(dāng)主語,句子充當(dāng)主語,句子充當(dāng)主語,it,充當(dāng)形式主語,Lets see which group can find the sentences like the following examples,in Reading on Page25-26,more quickly.,Attention please:,1.Four or six people in a group.,2.Try to f

3、ind as many sentences like the,following examples as possible!,3.If your group finish the task,please put,up your hand and one member should,tell us all the sentences your group have,found.,Group competition,Examples,:(sentences served as subject),What she said,is,not yet known.,That we shall be lat

4、e,is,certain.,It,is,certain,that we shall be late.,1.,What it was to become,was uncertain until between 4.5 and 3.8 billion years ago when the dust settled into a solid globe.,地球會變成什么樣子，直到45億至38億年前這個(gè)云團(tuán)變成固體的球狀物，才確定下來。,2.The earth became so violent that it was not clear,whether the shape would last or

5、 not.,地球變得激烈動蕩，不知道這個(gè)固體形狀 是否會繼續(xù)存在下去。,3.,What is even more important,is that as the earth cooled down,water began to appear on its surface.,更重要的是，隨著地球的冷卻，地球的表面就開始出現(xiàn)了水。,4.It was not immediately obvious,that water was to be fundamental to the development of life.,水對于生命的發(fā)展會起關(guān)鍵作用，這一點(diǎn)在當(dāng)時(shí)并不明顯。,Sentences in

6、Reading P25-26,Read&translate,所有劃線的句子都充當(dāng),_.,那么什么是,主語從句,呢？,主語,主語從句,(Subject Clause),如果一個(gè)句子在復(fù)合句中充當(dāng)一個(gè)主語,那么這個(gè)句子就是,主語從句,。,That he finished writing the composition in such a short time,surprised us all.,What we need,are good doctors.,Whom we must study for,is a question,of great importance.,What is subjec

7、t clause?,主語從句三要素,he became a great scientist,is,known to us all.,Is,what you told me really true?,謂語動詞用單數(shù),從句用陳述語序,不能省略關(guān)聯(lián)詞,Notice:,What we need most,are,books.,How,_,has not been found.,Student A:,where was Thomas Edison born?,Students B:,I dont know.I cant find the answer in the passage.,Where he w

8、as born,_,is still unknown.,Student A:,who will win the English speech contest?,Students B:,I dont know.It is hard to say.,Who will win the match,_,will be welcome.,Student A:,Tom,tomorrow is your birthday.Who do you invite?,Students B:,I will welcome everyone who comes to my party.,Whoever comes,在主

9、語從句中,謂語一般用單數(shù)。,無論他說什么都不重要。,Whatever he says,is,of no importance.,無論誰說這話都不對。,Whoever says that,is,wrong,但謂語動詞用單數(shù)還是復(fù)數(shù),不可,一概而論,而要視句子的意義而定。,What I need,is,money.,What I need,are,books.,what,與,that,在引導(dǎo)主語從句時(shí)的區(qū)別,what,引導(dǎo)主語從句時(shí)在句時(shí)在從句中充當(dāng),句子成分,如主語、賓語、表語,而,that,則不然。,1),What,you said yesterday,is right.,2),That,sh

10、e is still alive,is a consolation.,為了防止句子頭重腳輕，通常把形式主語,it,放在主語位置，真正主語后置。,It is certain,that he will win the match,.,That he will win the match,is certain.,2.It is true,that he has made a very,important discovery in chemistry,.,That he has made a very important discovery,in chemistry,is true,.,3.It is

11、 very likely,that they will hold a,meeting,.,That they will hold a meeting,is very likely,.,1.,以,that,引出的主語從句,常以形式主語,it,引導(dǎo),結(jié)構(gòu)為,:It is+,形容詞,/,名詞,/,某些動詞,ed,+that,從句。,(1)It is+,形容詞,/,名詞,+that,從句，如：,It is a pity/shame that,遺憾的是,It is possible that,很可能,It is unlike that,不可能,(2)It+,不及物動詞,+that,從句，如：,It se

12、ems/appears that.,似乎,It happened that,碰巧,It +be+,過去分詞,+that,從句,It is said that,據(jù)說,It is known to all that,眾所周知,It is reported that,據(jù)報(bào)道,It is believed that,人們相信,It is suggested that,有人建議,It must be pointed out that,必須指出,Try your luck!,Choose the pictures and finish the exercise with your group!,1._ w

13、atch was lost is unknown.,2._ you did is right.,3._ we will go for an outing,tomorrow remains unknown.,4._ we need is time.,5._ will be our monitor hasnt been decided yet.,whether what who whose whatever,Use the words below to fill in the blanks.,Whether,What,Whatever,Whose,Who,back,【,常見錯(cuò)誤展示,】,下列各句均

14、有一處錯(cuò)誤，請改正并分析錯(cuò)誤的原因。,1.Light travels faster than sound is common knowledge.,2.If shes coming or not doesnt matter much.,That,that,雖無詞義但引導(dǎo)主語從句位于句首時(shí)不能省略。,Whether,if,whether,都可表示“是否”,但,if,不能引導(dǎo)位于主句之前的主語從句，它可以引導(dǎo)位于主句之后帶有形式主語,it,的主語從句。,back,You are lucky today!,You dont need to do exercises!,back,3.That the

15、professor said is of great importance.,4.Where will the trees be planted has,not been decided.,What,that,引導(dǎo)主語從句時(shí)無詞義。,What the professor said,表示“教授所說的”。,將,will,置于,trees,之后。主語從句要用陳述句語序。,back,【,常見錯(cuò)誤展示,】,下列各句均有一處錯(cuò)誤，請改正并分析錯(cuò)誤的原因。,5.No matter who breaks the rule will be punished.,6.When the meeting will be

16、 held still remain a question.,引導(dǎo)讓步狀語從句時(shí)二者可互換，但引導(dǎo)名詞性從句時(shí)只能用,whoever,。,Whoever,主語從句表示單一概念時(shí)，謂語要用單數(shù)形式。,remains,back,【,常見錯(cuò)誤展示,】,下列各句均有一處錯(cuò)誤，請改正并分析錯(cuò)誤的原因。,7.It was requested that everyone,made a speech at the meeting.,在“,It is requested/ordered/suggested+that,從句”中，從句要用虛擬語氣，即謂語用“,should+,動詞原形”，,should,可省略。,(should)make,back,【,常見錯(cuò)誤展示,】,下列各句均有一處錯(cuò)誤，請改正并分析錯(cuò)誤的原因。,Finish ex.2 in,Discovering useful structures,.,Group work,Discovering useful structures,1.His discovery has not yet been proved.,What _.,2.Do the ot