人教版(新教材)高中英語選修1Unit5 Working the Land優(yōu)質(zhì)學案：Grammar-Subject clauses

1、Grammar-Subject clauses語法導曼感悟規(guī)律重點難點剖析*語法感知感知以下課文原句，完成方框下的小題However, what concerned him most was (ha( farmers often had poor harvests and sometimes even had a serious shortage of food to eat.How this could be done was a challenging question at the time.However, whether it was possible to develop a hy

2、brid of self-bollinating plants such as rice was a matter of great debate.Today, it is estimated that about 60 per cent of domestic rice consumption in China is comprised of crops generated from Yuan s hybrid strains, .What impresses people most about Yuan Longping is his ongoing ability to fulfill

3、his dreams.以上黑體局部在句中作主語。1句和5句中的what在從句中作主語。3句中的whether意為“是否”。4句中的ii是形式主語,真正的主語是后面的that引導的從句。2句中的how在從句中作狀語。F語法精析一、主語從句的定義如果一個從句在句子中擔當主語，那么這個從句就是主語從句。主語從句通常放在主句的謂 語動詞之前，有時也由形式主語it代替，而本身放在句子末尾。That you arc coming to London is the best news I have heard this long time.你將要來倫敦是這么長時間以來我聽到的最好的消息。Whether th

4、ey would support us was still a problem.他們是否會支持我們還是一個問題。What impressed me most was that they have all suffered a lot.讓我印象最深刻的是他們都受過很多苦。Is it true that he is the girl* s father?他是那個女孩的父親，是真的嗎？二、主語從句的引導詞類別例詞說明附屬連詞that, whether兩者在從句中均不作成分，只起連接作用；that 無實義，whether表示“是否”。連接代詞who, what, which, whoever, wha

5、tever 等在從句中作主語、賓語、表語、定語等成分。連接副詞when, where, how, why 等在從句中作時間、地點、方式、原因狀語等成分。What we need is more water.（連接代詞what在從句中作need的賓語）我們需要的是更多的水。Whether we can arrive there on time depends on the traffic.我們是否能按時到達那里由交通情況而定。When the delayed flight will take off depends much on the weather.延遲的航班什么時候起K主要取決于天氣狀況

6、。Why the man hadn t reported the accident sooner was never clear.誰都不清楚那個人為什么沒更早一點報告那起事故。Who the letter was from is still unknown.這封信是誰寄的尚不清楚。三、it作形式主語當句子主語過長時，為保持句子平衡，防止頭重腳輕，常把主語從句后置，而用形式主語it 代替。it作形式主語時常用于以下句型：句型說明h+系動詞+形容詞+主語從句常用于此句型的形容詞有important, (un)likely, possible, necessary, natural, wrong 等

7、。It+系動詞+名詞+主語從句常用此句型的名詞有a fact, an idea,an honour, a wonder, no wonder, a pity 等。Il+系動詞+過去分詞+主語從句常用于此句型的過去分詞有known, proved, said, decided, suggested thought 等。It+不及物動詞+主語從句常用于此句型的動詞有appear, happen, seem, occur, mailer 等。It is very important that a student (should) learn English well.學生學好英語很重要。It is

8、suggested that the meeting (should) be put off.有人建議會議延期召開。It depends on the weather whether they arc going shopping today. 他們今天是否去購物還得看天氣情況。For example, it can be proved that China has more people than any other country in the world. 舉例來說，中國人口比世界上其他任何國家的人口都多，這是可以得到證實的。It is no wonder that your stude

9、nts have made such great progress.難怪你的學生們進步這么大?！究键c警示】.從句的語序：在任何情況下，主語從句都用陳述語序。Whichever of you gets here first will get the prize.你們誰第一個到達這里誰就獲獎。.主謂一致(1)從句作主語時，主句的謂語一般用單數(shù)形式；但what和who引導主語從句時，有時主句 謂語的數(shù)應與主句中作表語的名詞保持一致。When we shall have our sports meeting has not been decided.我們什么時候開運動會還沒有確定。What they

10、need are books.他們需要的是書。(2)如果由and連接兩個或兩個以上的主語從句作主語時，謂語動詞用復數(shù)；由兩個或多個連 接詞引導一個主語從句時，謂語動詞用單數(shù)。When they will start and where they will go have not been decided yet.他們什么時候動身以及要去哪里還沒定下來。How and why he came to this city is a story of struggle and success.他如何及為什么來到這個城市是一個充滿奮斗和成功的故事。. whether引導的主語從句，如果用了形式主語it,

11、引導詞whether可以換成句如果whether 從句在句首或后面有or nol時，不能用if替換。Whether genetically-modified food does us harm remains to be seen.=It remains to be seen whether/if genetically-modified food does us harm.轉(zhuǎn)基因食物對我們是否有害有待觀察。.引導詞that在主語從句中不充當句子成分，也沒有含義，不可以省略：what在主語從句 中可作主語、賓語、表語或者定語，有具體的含義。What caused the accident wa

12、s a man lying on the ground.引起這起事故的是一個躺在地上的男人。That she was at the entrance to the cinema then was a big surprise to me.她當時在電影院入口處對我來說是一件讓我大吃一驚的事。達標檢測 當堂檢泅基礎達標演練I .單句語法填空Every year, whoever makes (he most beautiful kite will win a prize in the Kite Festival.It is often the case that anything is possi

13、ble for those who hang on to hope.Your support is important to our work.Whatever you can do helps.How we understand things has a lot to do with what we feel.Where Li Bai, a great Chinese poet, was born is known to ihe public, but some won t accept it.Exactly when the potato was introduced into Europ

14、e is uncertain, but it was probably around 1565.II .完成句子Whal he referred lo in his article was unknown to (he general readers.文章中他所提及的內(nèi)容一般讀者不知道。The villagers have already known whatwe lido is rebuilding the bridge.村民們已經(jīng)知道我們要做的事是重建這座橋。It matters little how a person dies, bul what matters much more is how he lives.個人