1、Flower vector created by pikisuperstar - 主語從句必修三 Unit4 語法什么是主語從句？當主語是一個句子時，即為主從Lets see some sentences !Do you know who is he ?Wang Yong is a courier(快遞員) and a volunteer.He helps the doctors and nurses in Wuhan.Helping them makes him happy.Please find out the subject clauses. 請找出主語從句 （tips:找謂語動詞和連接

2、詞）1. What he does are taking the doctors and nurses home and bringing them food.2. Who he helps are the doctors and nurses in Wuhan.3. Whatever they need will be brought by Wang Yongs team.WhatWhoWhatever連接代詞在從句中做賓語。連接代詞的選擇根據(jù)句子的意思判斷。Please find out the subject clauses. 請找出主語從句 （tips:找謂語動詞和連接詞）1. Whi

3、ch hospital they are from doesnt matter.2. Whose need is met(滿足) is grateful.3. Whoever gets help will never forget his kindness.4. Who he is doesnt change the fact that he is a hero.WhichWhoseWhoever連接代詞 Which, Whose 在從句中做定語。連接代詞 在從句中 做主語。Who連接代詞 在從句中 做表語。Please find out the subject clauses. 請找出主語從

4、句 （tips:找謂語動詞和連接詞）1. When he decided to help was a difficult time for Wuhan.2. Why he wants to volunteer is that he wants to help the doctors and nurses.3. Where he lives is a small warehouse (倉庫). 4. How he is able to meet all the needs impresses me.連接副詞 when where why how 在從句中做狀語。WhenWhyWhereHow用適

5、當?shù)倪B接詞完成句子。（who,what,where,which,why）1. _ he wants most is staying with his family.2. _ he is helping are people in Wuhan.3. _hospital will take the patient (病人) is unknown. 4. _ she is feeling tired is that she had a surgery(手術(shù)) not long ago.5. _ she works is her factory (工廠).WhatWhoWhichWhyWherePle

6、ase find out the subject clauses. 請找出主語從句 （tips:找謂語動詞和連接詞）1. That nurses couldnt go home made him decide to volunteer.2. That his wife fully supports him warms his heart.3. Whether his family would support him made him worried.ThatThatthat 在從句中不做句子成分，無意義，但也不可省略Whetherwhether 在從句中不做句子成分，意思“是否”考點一： 主語

7、從句 主謂一致 問題1. Whether the patient will be taken is unknown.2. When and where the patient will be taken is unknown.3. When the task can be finished and whether he can have a rest are unknown.4. What he wants most is staying with his family. What they need are masks(口罩).主句的謂語動詞，大多數(shù)使用_ (單數(shù)？復(fù)數(shù)？)由兩個連接詞引導(dǎo)同

8、一個主從，謂動使用_ (單數(shù)？復(fù)數(shù)？)主語為and連接的兩個主從時，謂動使用_ (單數(shù)？復(fù)數(shù)？)what在主從中做賓語時，謂動由_決定單復(fù)數(shù) (主語？表語？)單數(shù)單數(shù)復(fù)數(shù)表語考點二：主語從句中用It作形式主語的結(jié)構(gòu)1.It + be + 形容詞 + 主從2.It + be + 名詞詞組 + 主從3.It + be + 過去分詞 + 主從4.It + 動詞 + 主從1.It + be + 形容詞 + 主從（important重要的，obvious明顯的，true真的，natural自然的，strange奇怪的.）例子：That all countries work together is imp

9、ortant. 主語太長！ 用一個 It 來解決問題！ It is important that all countries work together. 所有國家一起合作是重要的。2.It + be + 名詞詞組 + 主從Its no wonder that. 難怪Its a pity that . 很遺憾Its a surprise that. 令人驚訝難怪你這么胖！Its no wonder that you are so fat.很遺憾你考試沒過！Its a pity that you fail the exam.3.It + be + 過去分詞 + 主從Its said that.

10、據(jù)說Its required/asked/ordered that . 被要求/命令I(lǐng)ts known to us all that. 眾所周知Its reported that. 據(jù)報道Its advised/ suggested that. 有人建議It must be pointed out that. 必須指出It has been proved that. 已證明1.據(jù)報道，很多名人也生病了。Its reported that many famous people also get ill.2.我們被要求正確佩戴口罩。Its required that we (should) wea

11、r masks correctly.過去分詞若為要求命令等虛擬語氣的詞，謂動要用 （should）+動詞原形。4. It + 動詞 + 主從It happens that. 碰巧It appears that . 似乎It doest matter that . 沒關(guān)系It surprises sb that . 讓人吃驚It worries sb that . 讓人擔心1.很多人還到酒吧去，真叫我吃驚。It surprises me that many people still go to the bar.2.似乎他們沒意識到他們的錯誤。It appears that they didt r

12、ealized their mistakes.Line 6What it was to become was uncertain until between 4.5 and 3.8 billion years ago when the dust settled into a solid globe. 如何分析從句？看到開頭有連接詞 在謂語前結(jié)束 把多余的介詞后的內(nèi)容劃掉它會變成什么還不確定,直到45至38億年前,當塵埃落定成固體地球。為什么用what來引導(dǎo)句子?Line 13What is even more important is that as the earth cooled down

13、, water began to appear on its surface. 如何分析從句？看到開頭有連接詞 在謂語前結(jié)束 把多余的介詞后的內(nèi)容劃掉更重要的是，隨著地球的冷卻，水開始出現(xiàn)在地表。為什么用what來引導(dǎo)句子?Line 21What many scientists believe is that the continued presence of water allowed the earth to dissolve harmful gases and acids into the oceans and seas. 許多科學(xué)家認為，水的持續(xù)存在使地球能夠?qū)⒂泻Φ臍怏w和酸溶解到海洋

14、和大海中。為什么用what來引導(dǎo)句子?Line 50 So whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved.因此，未來幾百萬年，地球上的生命是否會繼續(xù)下去，將取決于這個問題能否得到解決。為什么用whether來引導(dǎo)句子?Line 18It was not immediately obvious that water was to be fundamental to the development of l

15、ife.水對生命的發(fā)展是至關(guān)重要的，這一點并不是顯而易見的。這是一個什么句子?.用適當?shù)倪B接詞填空1(2018天津卷)_I want to stress is that our group is looking for new members right now.3(2016江蘇卷)It is often the case _ anything is possible for those who hang on to hope.4_ the delayed flight will take off depends much on the weather.7_ you said at the m

16、eeting describes a bright future for the company.WhatthatWhenWhat.用適當?shù)倪B接詞填空9_ surprised me most was that the little girl could play the violin so well.10It never occurred to me _ you could succeed in persuading him to change his mind.Whatthat.單句改錯1.If we will go there tomorrow depends on the weather. _2.What we need is reference books._3.That she says will not make any difference to our arrangements._IfWhetherisareisThatWhat.單句改錯