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1、Subject Clauses 主語從句主語從句 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.2.it was not clear whether the shape would last or not.3.What is even more important is that as the earth cooled down,water began to appear on its surfa

2、ce.4.It was not immediately obvious that water was to be fundamental to the development of life.5.What many scientist believe is that the continued presence of water.6.Why they suddenly disappeared still remains a mystery.7.Whether life will continue on the earth for millions of years to come will d

3、epend on whether this problem can be solved.Task1:Find the sentences which are subject clause in the reading passage,then underline the subject clauses.思從屬連詞從屬連詞 that,whether，if連接代詞連接代詞 who(ever),whom(ever),which(ever),what(ever)，whose連接副詞連接副詞 where,when,why,how Task2：主語從句的引導(dǎo)詞：主語從句的引導(dǎo)詞：考點一：連接詞的選用 活學(xué)

4、活用 _we understand things has a lot to do with what we feel.【2015北京】A.Where B.How C.Why D.When_ well go camping tomorrow depends on the weather.A.If B.Whether C.That D.Where _well go camping tomorrow has kept us all excited the whole day.A.If B.Whether C.That D.Where_ makes mistakes must correct them

5、.A.What B.That C.Whoever D.Whatever議、展、評BCCB考點二：it 作形式主語(1)It的用處：為了避免主語冗長和句子_,經(jīng)常用it作_,主語從句放在_作真正的主語。Eg:That he will refuse this piece of advice is impossible.（用it做形式主語改寫句子）It is impossible that he will refuse this piece of advice.頭重腳輕頭重腳輕形式主語形式主語句末句末 It+be+_+that從句從句(obvious,true,natural,surprising,

6、wonderful,possible,likely,certain,probable)Eg:顯然他撒謊了。_ 特別注意特別注意：It is important/natural/necessary/impossible/unbelievable/incredible/strange that.句型中,主語從句應(yīng)使用_語氣,即用“(_)+動詞原形”的形式。Eg:我們學(xué)好英語是必要的._(2)it 作形式主語常見的結(jié)構(gòu)形容詞形容詞It was obvious that he told a lie.虛擬虛擬shouldIt was necessary that we(should)learn Engl

7、ish well.It+be+_+that從句(no wonder,an honor,a good thing,a pity,no surprise,etc.).Eg:他很懶.。難怪他這次考試不及格。_名詞或名詞詞組名詞或名詞詞組He is very lazy.It was no wonder that he failed in the exam.It+be+_+that從句(said,reported,thought,expected,decided,announced,arranged,etc.).Eg:據(jù)報道，有五個人被埋在廢墟中。_特別注意:在 It+be+suggested/advi

8、sed/ordered/requested/insisted/required/demanded 中,that從句的謂語也應(yīng)該用_語氣,即用“(_)+動詞原形”的形式。Eg:人們建議應(yīng)該采取更多措施來保護環(huán)境。_過去分詞過去分詞 V-edIt was reported that five people were buried in the ruins.虛擬虛擬shouldIt is suggested that more measures(should)be taken to protect our environment.It+_+(連接詞不固定連接詞不固定)從句（seem/happen/a

9、ppear/matter/turn out/occur to/makes no difference等）Eg:你今天來或者明天來都沒關(guān)系。_不及物動詞及短語不及物動詞及短語It doesnt matter whether you come today or tomorrow.It+_+_+that從句 Eg,It surprised/amazed me that he should talk to his teacher in such a rude manner.(此處should表？)vt.(及物動詞及物動詞)O.(賓語賓語)考點三：主從的語序主從的語序 陳述語序 即 _【活學(xué)活用】_（他

10、什么時候會來）is not known.Why was Lily late is not important.（改錯）連接詞連接詞+主語主語+謂語謂語+其它其它When he will comeLily was 注意問題:(1)區(qū)分what和that _you said yesterday is right._she is still alive is a great news to all of us.總結(jié)：what在從句中_成分，如_；that在從句中_成分,只起_作用_意義_省略。ThatWhat無無連接連接不充當(dāng)不充當(dāng)主、賓、表主、賓、表充當(dāng)充當(dāng)不可不可(2)if與whether_ h

11、e will go to Beijing or not was not clear.It was not clear _ he will go to Beijing.總結(jié):如果whether從句位于_，或者與_連用時，不能用if替換 如果句中借用了_作形式主語，引導(dǎo)詞可以用_替換whether。Whether/ifWhether句首句首or notitif(3)主謂一致 When he will come _(be)a puzzle.When they will start and where they will go _(be)decided so far.When and where th

12、ey will go _(be)decided so far.What he needs_ that book.What he needs _some books.areisisareis總結(jié)：從句作主語時，謂語動詞多用_形式。如果由and連接兩個或兩個以上的主語從句作主語時，謂語動詞用_形式；由兩個或多個連接詞引導(dǎo)一個主語從句時，謂語動詞用_ what 引導(dǎo)的主語從句，主句動詞的單復(fù)數(shù)形式由_決定.（what 用法較特殊)單數(shù)單數(shù)單數(shù)單數(shù)復(fù)數(shù)復(fù)數(shù)表語表語檢 1._ he didnt attend the meeting yesterday wasntquite clear.2._ team

13、will win the match is still unknown.3._ comes to the party will receive a present.4.Its reported _ three people were killed in the accident 5._ he solved the problem successfully interested all of us.6._ is to be sent there to solve the problem hasnt been decided.I.用適當(dāng)?shù)倪B接詞填空，使句子意思完整。WhyWhichWhoevert

14、hatHowWho/whatII.下列各句中均有一處錯誤，請改正。1.That the old mans son wanted to know was where the gold had been hidden.2.Whether the 2008 Olympic Games will be held in Beijing excited the whole nation.3.Whatever leaves the room last ought to turn off the lights.4.How our spring sports meet will be held or not t

15、his week is not known yet.WhatWhetherWhoeverThat5.Its strange when he should have gone away without telling us.6.When and where the meeting will be held still remain a question.7.It was requested that everyone made a speech at the meeting.remainsmakethatIII 單項選擇1._ has helped to save the drowning gi

16、rl is worth praising.A.Who B.The one C.Anyone D.Whoever2.It was_ he said _ disappointed me.A.what;that B.that;that C.what;what D.that;what3._ was that he could go back to his hometown.A.That really excited him B.What really excited him C.Which really excited him D.That excited him really4._ he made

17、an important speech at the meeting was true.A.That B.Why C.What D.How5.It worried her a bit _ her hair was turning gray.A.whether B.that C.what D.whenBABAD6.Does _ matter if he cant finish the job on time?A.this B.that C.he D.it7._ is a fact that English is being accepted as an international languag

18、e.A.There B.This C.That D.It8._ what they told me really true?A.Has B.Is C.Does D.Have9.It matters little _ a man dies,but _ matters much is_ he lives.A.how;what;how B.how;it;how C.why;it;why D.that;what;that10._she couldnt understand was_fewer and fewer students showed interest in her lessons.A.Wha

19、t;why B.That;what C.What;because D.Why;thatAABDD11.What made her parents so angry?-_she had failed in the examination.A.As B.Because C.Since D.That12.It is necessary that a college student _at least a foreign language.A.masters B.master C.mastered D.will master13._ we go swimming every day _ us a lot of good.A.If.do B.That.do C.If.does D.That.doesDBD五、Homework 完成語法日日清Thank you!Good-bye!24 結(jié)束語結(jié)束語