高中英语Unit 5 Working the Land课时练习

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主语从句（The Subject Clause）
概念：在复合句中充当主语的句子， 叫做______________。
句子结构：“主语从句（引导词+主语+谓语..）+谓语动词+句子其它...”
Eg:___________________________________________他所说的很重要。
【答案】主语从句; What he said is f great imprtance
主语从句引导词
1）that
引导主语从句，本身无词义，在从句中不作成分，但不可省略。
_______________ Tm passed the exam made his parents happy.
汤姆通过了考试，这让他父母很高兴。
【答案】That
2）whether: 引导主语从句，意为“_______________是否”，在从句中不作成分，不可省略，位于句首时不能用if。
_______________Whether we ‘ll g camping tmrrw depends n the weather.
明天我们是否去野营取决于天气。
【答案】
3）what
引导主语从句，意为“_______________，”在从句中作主语、宾语、表语，不可省略。
What is needed fr the space trip is careful preparatin .（what 在从句作_______________）
去太空旅行所需要的就是仔细的准备。
What they want is a gd bk.（what 在从句作_______________）
他们想要的就是一本好书。
【答案】...的事; 主语; 宾语
4）其它特殊疑问词引导的主语从句：
注意特殊疑问词引导的主语从句要用_______________。
_______________ desn’t matter.谁要做这件事没关系。
_______________ will be annunced later.哪个计划更好稍后宣布。
______________________ is unknwn.
它是谁的还书不知道。
_______________ hasn’t been decided .
会议什么时候举行还没有决定。
_______________ is still a prblem .
我们要去哪里野营仍然是个问题。
_______________Why dinsaurs died ut remains a puzzle .
恐龙为什么灭绝了仍然是个谜。
_______________ is nt clear.
金子是如何在那里被发现的现在还不清楚。
【答案】陈述语序; Wh will d it; Which plan is better; Whse bk it is; When the meeting will be held; Where we will g fr a picnic; Hw gld was fund there
（三）主语从句it 做形式主语;
为了避免主语显得过长，可以用it 作为句子的主语，把主语从句移到句子的末尾。
1 . that 引导主语从句，it 作_______________常用句式：
【答案】形式主语
1 ) It +be +adj（certain,likely,surprising,..+ that 从句
It is certain that she will d well in her exam.
可以肯定她会考的很好。
注意以下几个形容词常用虚拟语气句式：
“It is +adj（strange奇怪的，natural 自然的，necessary 必然的，imprtant重要的）+ that 从句”
（从句谓语动词用“shuld +动词原形”，shuld 可省略）
It is strange that he (shuld) have treated his parents like that .
真奇怪，他竟然那样对待他父母。
___________________________________________________________________________
所有的学生都应该去听课，这是很重要的。
【答案】It is imprtant that students shuld attend all the lectures.
2）It +be +n (a /n wnder 奇怪/难怪，an hnr荣 幸，a pity/a shame 遗憾，+that 从句)
It is n wnder that yu are s tired.
难怪你这么累呢。
It is __________________ that yu have been walking fr hurs.
令人奇怪的是你一直走了好几个小时。
【答案】a wnder
3）It + be +过去分词（knwn,said,reprted,thught..）+ that 从句
It is well knwn that ______________________________practice makes perfect.
众所周知熟能生巧。
注意：It is suggested/prpsed/recmmended(建议，提议)，desired(要求)+that 从句，从句的谓语动词用“shuld +动词原形”，shuld 可省略。
It is suggested that the meeting (shuld ) _______________ till next week.
人们建议会议推迟到下周。
It is desired that every student (shuld) bey the schl rules .
强烈要求每个学生都应该遵守学校纪律。
【答案】practice makes perfect.;be put ff
4）It happens/happened that 从句（碰巧...）
It happened that she was ut when he called.
他打电话时她碰巧不在家。
2 .whether 引导主语从句，it 作形式主语常用句式：
1)whether 与r nt 直接连用
It makes n difference _______________ he will cme .
他是否来无关要紧。
【答案】whether r nt
2)whether 与表示选择的r连用
It makes n difference whether he cmes r leaves.
他是来还是去无关要紧。
3)与r nt 不直接连用，whether/if 都可
It makes n difference whether/if he will cme r nt.
他是否来无关要紧。
3.特殊疑问词（wh,when ,why ,where,hw.. ）引导 主语从句，it 作形式主语常用句式：
It makes n difference ___________ we will have the meeting. 我们在哪开会都无所谓
It hasn’t been decided___________ will give us a speech.
谁要给我们做演讲还没有决定。
It is hard t understand ___________ there is gravity .
为什么有引力很难理解。
【答案】where/wh/why
（四）主语从句注意：
1.主语从句的语序：陈述语序
Whse bk it is is unknwn.
它是谁的还书不知道。
2.主谓一致：单个的主语从句作主语，主句的谓语动词用_______________。
When the meeting will be held hasn’t been decided.
会议什么时候举行还没有决定。
【答案】单数
Why dinsaurs died ut _______________恐龙为什么灭绝了仍然是个谜。
【答案】remains a puzzle.
3.主语从句，表示“是否”，位于句首时只能用 whether。
____________________________________________________________
明天我们是否去野营取决于天气。
【答案】Whether we’ll g camping tmrrw depends n the weather.
巩固训练
I.完成句子
1.我们最欣赏的是你们有很强的团队精神。
was that yu had a strng teamwrk spirit.
【答案】What we appreciated mst
2.飞机何时起飞还没有宣布。
has nt been annunced.
【答案】When the plane is t take ff
3.光沿直线传播,这是众所周知的事。
in straight lines is knwn t all.
【答案】That light travels
4.他在如此短的时间内写完作文使我们惊奇。
in such a shrt time surprised us all.
【答案】That he finished writing the cmpsitin
5.谁要当我们的班长还没有决定。
hasn’t been decided yet.
【答案】Wh will be ur mnitr
6.他真的在化学方面有一个非常重要的发现。
he has made a very imprtant discvery in chemistry.
【答案】It is true that
II.填入合适的连接词。
【答案】
That everything in the wrld changes was ften a theme in petry f the Rmantic Mvement.
It suddenly ccurred t him that he had left his key in the ffice.
It remains t be seen whether the newly frmed cmmittee’s plicy can be put int practice.
Everyne in the village is very friendly.It desn’t matter whether yu have lived there fr a shrt time r a lng time.
Whether there are living creatures in the uter space as thse n Earth hasn’t been prved until nw.
Whether it is true remains a questin.（引导主语从句置于句首时只能用whether不能用if）
Wh will teach us English is clear nw.
Whse bk is left in the library remains unknwn.
Which style is mre acceptable hasn't been discussed yet.
It is by n means clear what the president can d t end the strike.
What we expect frm yu is wrking hard rather than hardly wrking.
What sme peple regard as a drawback is seen as a plus by many thers.
What I want t tell yu is the deep lve and respect I have fr my parents.
Whever wants t stay in a htel has t pay their wn way.
Whichever ne f yu break the windw will have t pay fr it.
Whatever yu need in cllege has been bught.
Exactly when the ptat was intrduce int Eurpe is uncertain, but is was prbably arund 1565.
When the delayed flight will take ff depends much n the weather.
Where the anniversary celebratin will be hld depends n the manager.
Hw acupuncture reduces and relieves pain is unclear.
Why they suddenly disappeared still remains a mystery.