高中英語選擇性必修一 5.3 Learning about language 課件(共22張)

1、人教版英語選擇性必修第一冊(cè)Unit 5 Working the land Period 3 Learning about languageDiscover useful structures: Subject clauses在復(fù)合句中充當(dāng)主語成分的從句叫做主語從句。Discover useful structures: Subject clausesWhat Yuan Longping really cared about was not money or celebrity.That Yuan Longping had realised his dream of seawater rice

2、surprised the whole worldIts surprised the whole world that Yuan Longping had realised his dream of developing seawarer rice.Discover useful structures: Subject clauses主語從句，即在復(fù)合句中充當(dāng)主語成分的句子.That he finished writing the composition in such a short time surprised us all.他在很短的時(shí)間內(nèi)寫完作文讓我們都很驚訝此復(fù)合句主要描述的是某事讓

3、我們驚訝，某事就是該復(fù)合句的主語，因此“That he finished writing the composition in such a short time”便是該復(fù)合句的主語從句。引導(dǎo)主語從句的連詞主要有：從屬連詞：that whether連接代詞：who whoever whom whose what whatever which whichever連接副詞：when where how why whenever wherever however引導(dǎo)詞+主語+動(dòng)詞=主語從句試翻譯:我們明天是否會(huì)去郊游仍舊未知。 tomorrow remains unknown.Whetherwewi

4、ll go for an outingDiscover useful structures: Subject clauses主語從句的時(shí)態(tài)不受主句時(shí)態(tài)的影響和限制,主語從句常作單數(shù)。（1）Who will be our monitor hasnt been decided yet. 誰當(dāng)我們的班長(zhǎng)尚未決定。（2）Whom we must study for is a question of great importance. “我們?yōu)檎l而學(xué)習(xí)”是個(gè)很重要的問題。（3）What caused the accident remains unknown. 事故的起因是未知的。（4）Whatever

5、you did is right. 你做的任何事都是正確的。（5）Whom the watch belongs to is unknown. 手表的歸屬是未知的。（6）What we need is time. 我們需要的是時(shí)間。（7）What we need are good doctors. 我們需要的是好的醫(yī)生。Discover useful structures: Subject clauses歸納總結(jié)：主語從句必須有引導(dǎo)詞；主語從句用陳述句語氣。連詞位于句首不能省略主語從句大多數(shù)情況下視為第三人稱單數(shù)，但也有例外.主語從句引導(dǎo)詞的選擇主要是根據(jù)從句的結(jié)構(gòu)和意義來選擇。 如果從句的意義

6、和結(jié)構(gòu)完整，則用that。 如果從句的意義和結(jié)構(gòu)不完整，則根據(jù)從句的意義和結(jié)構(gòu)選擇相應(yīng)的引導(dǎo)詞。練一練：用適當(dāng)?shù)倪B詞填空_ bag it is cannot be told._ India needs is a law to make land ownership fairer.It is not yet decided _ cash crop will be produced next year._ he said was right.WhoseWhatWhat/Whateverwhich/whatDiscover useful structures: Subject clauses比較th

7、at / what1. _ he wants is a book. 主語從句 2. _ he wants to go there is obvious. 主語從句 3. _ happened is not clear. 主語從句4. This is the best TV_ is made in China. 定語從句5. The first museum _ he visited in China was the History Museum. 定語從句that 和what 的選用：that 和 what 都可引導(dǎo)主語從句。但是，what除起連接作用外，還在主語從句中充當(dāng)成分，可做從句的主語

8、、賓語、或表語，相當(dāng)于the thing(s) that；而that在主語從句中不充當(dāng)任何成分，只起連接作用。WhatThatWhatthatthatDiscover useful structures: Subject clauses為了使句子保持平衡，常用it來代替主語從句，而把主語從句放到后面，尤其是連詞that引導(dǎo)的主語從句常用于此種句式中。常用句型如下：It+ be +名詞+ that 從句It+ be + 形容詞+ that從句It+ be + 動(dòng)詞的過去分詞+ that從句It + 不及物動(dòng)詞+ that從句Discover useful structures: Subject

9、clauses1. Its likely/possible/important/necessary/clear that 很可能/重要的是 /必要的是/很清楚2. Its known/reported/ thought/said that 據(jù)說/據(jù)報(bào)道3. It seems/appears/happens that 顯然、明顯、碰巧.4. Its been announced/declared that 已經(jīng)通知/宣布5. Its no wonder that難怪/無疑6. Its a pity/a fact /a common knowledge (眾所周知） / a common sayi

10、ng（俗話說）thatDiscover useful structures: Subject clauses翻譯練習(xí)1. 他多長(zhǎng)時(shí)間去看望奶奶取決于他能抽出多少時(shí)間。2. 那一年有多少人死于饑餓永遠(yuǎn)也不為人知了。3. 所有人都知道火藥最初是由中國(guó)人發(fā)明的。4. 造成事故的原因仍舊是個(gè)秘密。 How often hell go to see his grandmother depends on the time he can spare. How many people died from starvation that year will never be known. It is known

11、 to all that the gun powder was first invented by the Chinese. It is still a mystery what caused the accident.Discover useful structures: Subject clauses下列各句均有一處錯(cuò)誤，請(qǐng)改正并分析原因。1. Light travels faster than sound is common knowledge.改：在Light前加That。that雖無詞義但引導(dǎo)主語從句位于句首時(shí)不能省略。2. If shes coming or not doesnt

12、matter much.改：將If變?yōu)閃hether。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。3. That the professor said is of great importance.改：將That改為What。that引導(dǎo)主語從句時(shí)無詞義，只起一個(gè)連接的作用。What the professor said表示“教授所說的”，said后面還需要一個(gè)賓語，就只能用what。Discover useful structures: Subject clauses下列各句均有一處錯(cuò)誤，請(qǐng)改正并分析原因。

13、4. Where will the trees be planted has not been decided.改：將will置于trees之后。主語從句要用陳述句語序。5. No matter who breaks the rule will be punished.改：將No matter who變?yōu)閃hoever。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。6. When and where the meeting will be held still remain a question.改：將remain變?yōu)閞emains。主語從句表示單一概念時(shí)，謂語要用單數(shù)

14、形式。Discover useful structures: Subject clausesDiscover useful structures: Subject clausesTranslate the completed sentences into Chinese.1. 這些小麥農(nóng)場(chǎng)主什么時(shí)候加入這個(gè)試驗(yàn)仍然是一個(gè)懸而未決的問題。2. 我們?nèi)绾尾拍苷业揭粋€(gè)適合的解決辦法來生產(chǎn)足夠的糧食同時(shí)保持環(huán)境安全是我們 要研究的一個(gè)重要主題。3. 令人多人擔(dān)憂的是這些化學(xué)藥品甚至能導(dǎo)致癌癥。4. 這些蔬菜甚至能通過這種新技術(shù)無土種植，令我們所有人都很吃驚。5. 生活方式慢節(jié)奏而且健康是很多人更愿意住

15、在鄉(xiāng)下而不是城里的原因。Discover useful structures: Subject clauses12431. the fact that the vegetables look beautiful on the outside 2. the thing that she is unhappy about 3. the way that they are going to spend their retirement 4. the question whether they can live a healthy life Discover useful structures: Su

16、bject clausesWhat I have forgottenisItWhosehas notDiscover useful structures: Subject clausesCombine each pair of sentences using the word in brackets.1. Can we control pests without causing any ill effects? This still remains a question. (Whether)2. Agriculture is the foundation of our country. Thi

17、s is well known. (It)3. Some less-developed countries are suffering frood shortage. It is a serious problem in the world.(That)Whether we can control pests without causing any ill effects still remains a question.Its well known that agriculture is the foundation of our country.That some less-develop

18、ed countries are suffering frood shortage is a serious problem in the world. Discover useful structures: Subject clausesCombine each pair of sentences using the word in brackets.4. Some herdsmen in Inner Mongolia fix elecronic snesors to their cattle to monitor their movements. It is true that they

19、are doing this.(It)It is true that some herdsmen in Inner Mongolia are fixing elecronic snesors to their cattle to monitor their movements. Discover useful structures: Subject clausesMake sentences using subject clauses with the help of the clues.1. he said/reasonable2. she will accept the invitatio

20、n/not clear yet3. the animals are moving to/not exactly known4. you have recovered from your illness/a grat relief to us.5. he has become distant recently/my concernWhat he said is reasonable.Where the animals are moving has not been exactly known.That you have recovered from your illness is a great

21、 relief to us.Whether she will accept the invitation is not clear yet.Its my concern why he has become distant recently.Discover useful structures: Subject clausesRewrite the sentences using subject clauses1. We wanted to know where he had lost the laptop.2. The way in which he did the experiemnt was puzzling to other people.3. Do the