《高一英语必修3全册课件4-3Learning about Language》由会员分享，可在线阅读，更多相关《高一英语必修3全册课件4-3Learning about Language（32页珍藏版）》请在金锄头文库上搜索。
1、Unit 4 Astronomy：the science of the stars人 教 版 英 语Unit 4 Astronomy：the science of the stars人 教 版 英 语Unit 4 Astronomy：the science of the stars人 教 版 英 语.词汇过关1_adj. 温和的；文雅的_ adv.2_ n. 卫星_n. 行星_n. 恒星3_n. 气候4_v. 碰撞；坠落5_n. 万有引力；重力答案：1.gentle; gently 2.satellite; planet; star 3.climate 4crash 5.gravityUnit
2、 4 Astronomy：the science of the stars人 教 版 英 语.短语自查1挡住光线_2as a result_3give birth to_答案：1.block out 2.结果 3.分娩；产生Unit 4 Astronomy：the science of the stars人 教 版 英 语.语法练习判断哪些句子是主语从句。1It is certain that Miss Smith will do well in the final exam.2We thought it strange that Tims father did not come here y
3、esterday.3The problem is that no one can replace him in teaching English.4They were all very much worried over the fact that you lost heart when you failed in the exam.Unit 4 Astronomy：the science of the stars人 教 版 英 语5Has it been decided where the players will perform the experiment?6I dont believe
4、 they have finished their work yet.7It was Tom that came late for school yesterday morning.8That we try again is a good idea.9It seems that he is very disappointed.10It was reported that two men were killed in the accident.答案：1、5、8、9、10是主语语从句。Unit 4 Astronomy：the science of the stars人 教 版 英 语Unit 4
5、Astronomy：the science of the stars人 教 版 英 语语法专区名词性从句(二)主语从句1概念在复合句中充当主语的句子叫主语从句。主语从句主要由that和wh 词引导。Unit 4 Astronomy：the science of the stars人 教 版 英 语2类类型1)主语语从句位于句首。如：What he wanted to see was an end to all the armies of the world.他想要看到的是世界军备竞赛军备竞赛 的结结束。2)主语语从句位于句尾，使用先行词词it作形式主语语。如：It was right that
6、 the temple was rescued.这这座庙庙被拯救了，这这很好。在下列情况下，一般使用形式主语语it，而将真正的主语语从句放在句尾。Unit 4 Astronomy：the science of the stars人 教 版 英 语(1)谓语谓语 是seem, appear, be possible/impossible, be a pity, be a wonder, be likely等。如：It appeared to scientists on earth that the stars had moved.在地球上的科学家看来，这这些星体已经经移动动了。Its a won
7、der you recognized me.你能认认出我来，真是奇怪。Unit 4 Astronomy：the science of the stars人 教 版 英 语(2)在It is known.，It is said.，It is hoped.，It is believed.等惯惯用的被动结动结 构中。如：It is believed that before writing was developed, people in China used to keep records by putting a number of stones together.据信，在文字发发明之前，中国人靠
8、把许许多石头头聚集在一起来作记录记录 。需要注意的是：当主语语从句放在句尾而用形式主语时语时，形式主语语只能用it，而不能使用this, that等代词词。如：Does it matter if he cant finish the job on time?若他不能按时时完成工作要紧吗紧吗 ？Unit 4 Astronomy：the science of the stars人 教 版 英 语3连连接词词及其用法1)that, whether/if连连接词词that本身没有意义义，不作句子成分，只表示从句的开始，位于句首时时，that不能省略；whether/if尽管不充当句子成分，但是含有“是
9、否”的意思，可以加上“or not”，其语义语义 不变变。whether和if也有不同的用法，如果主语语从句位于句首则则必须须用连连接词词whether，不用if。Whether well go camping tomorrow depends on the weather.明天我们们是否去野营营取决于天气情况。Unit 4 Astronomy：the science of the stars人 教 版 英 语2)what, who(m)，which, whose, when, where, why, how在这这一类连类连 接词词中，除了引导导主语语从句之外，在从句中又分别别起代词词、副词词
10、或形容词词的作用，在从句中分别别作主语语、宾语宾语 、表语语、状语语和定语语。因此，what，who(m)，which又称为连为连 接代词词；when, where, why, how又称为连为连 接副词词；whose, which, what又称为连为连 接形容词词。试试比较较：Unit 4 Astronomy：the science of the stars人 教 版 英 语Who will do it doesnt matter.(连连接代词词who在从句中作主语语)谁谁去做这这件事没关系。What we need is more water.(连连接代词词what在从句中作need的宾
11、语宾语 )我们们所需要的是更多的水。Which of the two is better remains to be seen.(连连接代词词which在从句中作主语语)这这两者中哪个更好还还要再看。When we will start the work is an important question.(连连接副词词when在从句中作时间时间 状语语)我们们什么时时候开始工作是个很重要的问题问题 。Unit 4 Astronomy：the science of the stars人 教 版 英 语Where the library is to be built has not been de
12、cided yet.(连连接副词词where在从句中作地点状语语)这这个图书馆图书馆 要建在哪里还还未决定。Why she was late for school is quite clear now.(连连接副词词why在从句中作原因状语语)她上学迟迟到的原因现现在看来很清楚。Which plan is better will be announced later.(连连接形容词词which在从句中作名词词plan的定语语)哪个计计划更好稍后会宣布。Unit 4 Astronomy：the science of the stars人 教 版 英 语3)whatever, whoever, w
13、homever, whicheverwhatever等连连接词词与what等连连接代词词的用法一样样，只是具有较较强的语义语义 ，有“凡是、不管、无论论”等意思。如：Whatever he said wasnt true.他说说的任何事情都不是事实实。Whoever guesses what I have in my hand may have it.不管谁谁猜对对了我手里拿的东东西，这东这东 西就给给他(她)。Whichever book you choose is yours.无论论你选选中哪本书书都归归你。Unit 4 Astronomy：the science of the stars
14、人 教 版 英 语【牛刀小试】(1)(2009天津7)It is obvious to the students_they should get well prepared for their future.Aas Bwhich Cwhether Dthat答案：D 考查句式。It is obvious thatclause “显而易见；一目了然”。句意：学生们很明白他们应该为未来做好充分的准备。Unit 4 Astronomy：the science of the stars人 教 版 英 语(2)(2009上海37)It is immediately clear_the financial
15、 crisis will soon be over.Asince Bwhat Cwhen Dwhether答案：D 考查查主语语从句的用法。句意：经济经济 危机是否会很快结结束是很明显显的事情。“是否”用whether表示，不能选选when是因为为从句中由soon这这一时间时间 状语语。Unit 4 Astronomy：the science of the stars人 教 版 英 语(3)(2008上海36)It has been proved_eating vegetables in childhood helps to protect you against serious illnesses in later life.Aif BbecauseCwhen Dthat答案：D 句意：已经证实经证实 童年时时期食用蔬菜有助于晚年保护护自己身患严严重的疾病。It has been proved that.为为主语语从句，表示“已经证经证 明” 。例如：Can it be proved that he did commit these offences? 能证证明他确实实犯了这这些罪吗吗？Unit 4 Astronomy：the science of the stars人 教 版
