主語(yǔ)從句課件

1、Subject Clauses 主語(yǔ)從句主語(yǔ)從句1. 主語(yǔ)從句：從句在句中充當(dāng)主語(yǔ)成分主語(yǔ)從句：從句在句中充當(dāng)主語(yǔ)成分1). That he will succeed is certain .2)Whether he will go there is not known .3) How we can help the twins will be discussed at the meeting. 1 引導(dǎo)主語(yǔ)從句的連接詞有三類：引導(dǎo)主語(yǔ)從句的連接詞有三類：(1) 連詞連詞that、 whether ：Whether we go by train or by boat makes no diff

2、erence.Whether hell come here isnt clear. That price will go up is certain.What she did is not yet known.Who will write the poem has not been decided yet.Whatever he did is right.(2)連接代詞連接代詞who, whom, whose, what, which, whoever, whatever, whichever等等3) 連接副詞連接副詞 where, when, how, why等。等。How this hap

3、pened is not clear to anyone. When he will be back depends on the weather.How the pyramids were built is still a mystery.主語(yǔ)從句后置主語(yǔ)從句后置! 為了避免主語(yǔ)冗長(zhǎng)免主語(yǔ)冗長(zhǎng),句子頭重腳輕句子頭重腳輕,經(jīng)常用經(jīng)常用it作作形式主語(yǔ)形式主語(yǔ),主語(yǔ)從句放在后面作真正的主語(yǔ)主語(yǔ)從句放在后面作真正的主語(yǔ). 例:That we shall be late is certain.- Its certain that we shall be late.1. That the earth

4、is round is known to all.- 2. 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.A. It+be+形容詞形容詞(obvious,true,natural,surprising,good,wonderful,funny,possible,likely,certain,probable,etc.)+that從句。如：Itiscertainthatshewilldowellinher

5、exam.B. It+be+名詞詞組名詞詞組(nowonder,anhonour,agoodthing,apity,nosurprise,etc.)+that從句。如：Itsapitythatwecantgo.C. It+be+過(guò)去分詞過(guò)去分詞(said,reported,thought,expected,decided,announced,arranged,etc.)+that從句。如：ItissaidthatMr.GreenhasarrivedinBeijing.D. It+seem, happen等不及物動(dòng)詞及短語(yǔ)等不及物動(dòng)詞及短語(yǔ)+that從句。如：從句。如：Ithappenedtha

6、tIwasoutthatday.E. It+doesnt matter (makes no difference, etc.)+連接代詞連接代詞或連接副詞引起的主語(yǔ)從句。如：或連接副詞引起的主語(yǔ)從句。如：Itdoesntmatterwhethershewillcomeornot. How you got me blind is still a mystery. That she won the game made her very happy. What he said is not true. What they need is a dictionary. 結(jié)論結(jié)論 主語(yǔ)從句多位于主語(yǔ)從句多

7、位于_句首主語(yǔ)的位置句首主語(yǔ)的位置Try to draw a conclusion.找出下面句子中的連詞。找出下面句子中的連詞。Who will go makes no difference.Which is the best is not certain.Why dinosaurs died out is unknown.When and where we will get together has not been decided.How she can keep healthy is a secret.Whether he will come is not important.WhoWh

8、ichWhyWhenHowWhether Who will go makes no difference. Which is the best is not certain. Why dinosaurs died out is still unknown. When we will get together has not been decided. How she can keep healthy is a secret. Whether he will come is not very important.Who will goWhich is the bestWhy dinosaurs

9、died outWhen we will get togetherHow she can keep healthyWhether he will come找出主語(yǔ)從句。找出主語(yǔ)從句。1. If she will come is not important. Whether she will come is not important.2. If she will have enough time is a question. Whether she will have enough time is a question3. If he will hand in his homework is

10、a questions. Whether he will hand in his homework is a questions.結(jié)論結(jié)論1：在主語(yǔ)從句中只能用在主語(yǔ)從句中只能用whether,不能用不能用if 1. Where will the meeting be held is not decided. Where the meeting will be held is not decided. 2. When will the work be finished is unknown. When the work will be finished is unknown. 3. What

11、will he do after graduation is a question. What he will do after graduation is a question.結(jié)論結(jié)論2：主語(yǔ)從句應(yīng)使用陳述句語(yǔ)序主語(yǔ)從句應(yīng)使用陳述句語(yǔ)序注注 意：意：1.What you left are only several old books.2.What you said is of great importance.3.Whether hell come here is not clear. 1.“if” 不能引導(dǎo)主語(yǔ)從句，應(yīng)有不能引導(dǎo)主語(yǔ)從句，應(yīng)有“whether”引引導(dǎo)。導(dǎo)。3.主語(yǔ)從句的主

12、語(yǔ)從句的 “that” 一般不能省。一般不能省。4.“what”引導(dǎo)主語(yǔ)從句時(shí)，謂語(yǔ)動(dòng)詞：引導(dǎo)主語(yǔ)從句時(shí)，謂語(yǔ)動(dòng)詞： 1）常與其后的名詞作表語(yǔ)一致）常與其后的名詞作表語(yǔ)一致 2）根據(jù)句子的語(yǔ)）根據(jù)句子的語(yǔ)境而定。境而定。4. 主語(yǔ)從句需注意的問(wèn)題主語(yǔ)從句需注意的問(wèn)題2.主語(yǔ)從句中用陳述語(yǔ)序主語(yǔ)從句中用陳述語(yǔ)序1.Where shall we spend the holiday isnt decided.2.You have made a mistake is a fact.3.That is certain that we can win.4.No matter who leaves the

13、room last ought to turn off the lights.5.If the policemen will come is not certain.we shallThat you haveIt isWhoeverwhether改錯(cuò)練習(xí)改錯(cuò)練習(xí)1._ he made an important speech at the meeting was true. A. That B. Why C. What D. How 2. _well go camping tomorrow depends on the weather . A If B Whether C That D Where 3._ is known to us all is that America is a developed country_the First World.a.Which; belong to b. As, belonged to c. What; belonging to d. It; belonging to4. Its known to us all _ a form of energy . A.