高中英语人教版必修三教学案Unit4Section3含答案.docx

1、高中英语人教版必修三教学案Unit4Section3含答案高中英语人教版必修三教学案：Unit-4-Section-3-含答案语法初识原句感知自主探究What it was to become was uncertain until between 4.5 and 3.8 billion years ago when the dust settled into a solid globe.The earth became so violent that it was not clear whether the shape would last or not.What is even more

2、important is that as the earth cooled down, water began to appear on its surface.It was not immediately obvious that water was to be fundamental to the development of life.What many scientists believe is that the continued presence of water allowed the earth to dissolve harmful gases and acids into

3、the oceans and seas.So whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved.(1)以上各句皆为主从复合句，句中黑体部分为名词性从句作主语，称之为主语从句。(2)what引导主语从句，what在从句中作表语(句)，主语(句)，及宾语(句)。(3)whether引导主语从句，意为：是否(句)。(4)可用it作形式主语，真正的主语为名词性从句(句由that引导主语从句)。语法剖析语法点一定义在

4、主从复合句中充当主语的从句即为主语从句。What made her happy was that she won the game in such an important match.令她高兴的是在这么重要的比赛中她获胜了。 It is decided that the meeting has been put off till next Monday.已经定下来将会议推迟到下周一了。语法点二主语从句的连接词及其句法功能1.连接词that和whether/if(1)that在从句中不充当任何句子成分，本身无任何意义，只起连接作用，但不可省略。That we are invited to th

5、e concert this evening is good news to us.我们被邀请去参加今晚的音乐会，这对我们来说是个好消息。(2)whether/if在从句中不充当任何句子成分，起连接作用，意为“是否”，不可省略。Whether the plan will be carried out is still unknown. It is still unknown if/whether the plan will be carried out.这个计划是否会实施还不知道。点津whether引导的主语从句既可放在句首也可放在句尾，但if引导的主语从句只能放在句尾，前面需用it作形式主语

6、。即时演练1完成句子That_she_could_come_to_help_us made us very happy.她能来帮助我们使我们很高兴。Whether_he_can_finish_his_task_on_time is of great importance.他能否按时完成任务非常重要。2连接代词(who, whose, whom, what, which, whichever, whoever, whomever, whatever等)。连接代词引导主语从句，在从句中可以作主语、宾语、表语或定语。Who will go to the concert is unknown.不知道谁

7、会去听音乐会。Whoever did this job must be rewarded.无论谁做了这项工作一定要得到酬谢。What the lecturer said is of great value.演讲者所讲的非常有价值。点津who 引导的主语从句表示一件“事情”，而whoever引导的主语从句指“人”。3连接副词(when, where, how, why等)。连接副词引导主语从句并在从句中作状语。When we will have a meeting is an important question.我们何时举行会议是个重要的问题。How they will solve the s

8、erious problem hasnt been decided.他们将怎样解决这个严重的问题还没有决定。点津名词性从句引导词的确定步骤：(1)分析句式结构，明确名词性从句在句中的功能；(2)明确名词性从句所表达的意义；(3)明确名词性从句中所需要的成分及意义；(4)确定从句的引导词。即时演练2用连接代词或连接副词填空并写出它们在从句中所作的语法成分Why John was late for the class has been unexplained.状语Which part of the country he will travel to needs discussing.定语Where

9、 cars will be parked in the future is a question.状语What we should do next remains unknown.宾语Whoever is interested in the activity can sign your names.主语语法点三主语从句中用it作形式主语的结构1.Itbe形容词(obvious, true, natural, strange, etc.)主语从句It is doubtful whether she will be able to come to the party.她是否能来参加聚会还很难说。I

10、t is necessary that a college student (should) master one or two foreign languages.大学生掌握一两门外语是必要的。点津在“It be形容词主语从句”结构中，若形容词为important/necessary/strange等时，主语从句中的谓语用“(should) do”。2It be名词词组(no wonder, an honour, a pity, a/no surprise, etc.)主语从句Its a pity that you missed the film.你没有看那部电影真是太遗憾了。3It be过

11、去分词(said, reported, thought, expected, proved, etc.)主语从句It is reported that no passengers were injured in the accident.据报道在这起事故中没有乘客受伤。点津在“It be过去分词主语从句”结构中，过去分词若为suggested/ordered/required/advised等时，主语从句中的谓语用“(should) do”。4It不及物动词(happen, seem, appear, etc.)主语从句It happened that I was out that day.碰

12、巧那天我不在。5It 及物动词宾语主语从句It surprised him why they came to visit him suddenly.让他吃惊的是他们为什么突然都来看他。即时演练3句型转换That he suddenly fell ill last month surprised us.It surprised us that he suddenly fell ill last month.Whether she will come or not doesnt matter.It doesnt matter whether she will come or not.That li

13、ght travels in straight lines is known to us all.It is known to us all that light travels in straight lines.语法点四主语从句中应注意的问题1.从句要用陈述语序How he succeeded is still a puzzle.他是如何成功的仍然是个谜。2主谓一致(1)从句作主语时，主句的谓语一般用单数形式。Where he will get a job after graduation has puzzled him much.毕业后到哪儿找份工作使他很困惑。点津what引导主语从句时

14、，有时主句谓语动词应与主句中作表语的名词保持一致。What the school needs most are books.这所学校最需要的是书。(2)如果由and连接两个或两个以上的主语从句作主语时，谓语动词用复数；由两个或多个连接词引导一个主语从句时，谓语动词用单数。When they will start and where they will go have not been decided yet.他们将在什么时候动身以及要去哪里还没定下来。When and where they will hold the meeting is not clear.他们何时何地召开会议还不清楚。即时

15、演练4单句改错When will we set off is still under discussion. will_wewe_willWhat he needs most are money.areisWhen and where the meeting will be held have not been decided.havehasThat the coal workers are still alive are a wonder.第二个areis链接高考单句语法填空1(2016江苏高考)It is often the case that anything is possible f

16、or those who hang on to hope.2(2016北京高考)Your support is important to our work. Whatever you can do helps.3(2015江苏高考)Where Li Bai, a great Chinese poet, was born is known to the public, but some wont accept it.4(2015北京高考)How we understand things has a lot to do with what we feel.5(2014大纲版全国卷)Exactly

17、when the potato was introduced into Europe is uncertain, but it was probably around 1565.6(2014陕西高考)When the delayed flight will take off depends much on the weather.7(2014天津高考)I think what impresses me about his painting is the colours he uses.8(2014北京高考)Some people believe what has happened before

18、 or is happening now will repeat itself in the future.9(2013北京高考)What makes the book so extraordinary is the creative imagination of the writer.10(2013四川高考)What you said at the meeting describes a bright future for the company.针对演练.句型转换1He couldnt understand that, as a teacher of Chinese, he had bee

19、n asked to teach history.What he couldnt understand was that, as a teacher of Chinese, he had been asked to teach history.2When and where to go on a business trip hasnt been decided.It hasnt been decided when and where to go on a business trip.3We dont know who will take the place of Mr Smith.Who wi

20、ll take the place of Mr Smith isnt known to us.4My uncle happened to be out when I visited him on Sunday.It happened that my uncle was out when I visited him on Sunday.5Whether the old couple will like the trip abroad or not remains to be seen. It remains to be seen whether the old couple will like

21、the trip abroad or not.6It makes no difference how you get there. How you get there makes no difference.7Literary books, especially those by famous writer, interests me most.What interests me most is literary books, especially those by famous writers.8Our desire is that you should provide some money

22、 to fund our program, as well as offer us some practical suggestions.Its our desire that you should provide some money to fund our program, as well as offer us some practical suggestions.9Everyone present was interested in how he managed to survive in the forest.How he managed to survive in the fore

23、st interested everyone present.10To our excitement, he will attend the meeting.That he will attend the meeting has excited all of us.完成句子1That_drought_affected_the_area_so_deeply has made people worried.干旱严重影响了这个地区，这让人担忧。2It is still unknown if/whether_the_film_will_be_released这个电影是否会上映还不知道。3It is o

24、rdered that the construction of the sports ground should_be_completed_next_week命令操场建设下周完成。4What_role_he_will_play_in_this_activity hasnt been decided.他在这次活动中将起什么作用还未定下来。5What_she_is_buying_now are some magazines.现在她正在买的东西是一些杂志。6It is clear that_somebody_came_to_visit_him_just_now很明显刚刚有人来拜访过他。7When_t

25、he_dispute_in_this_area_will_stop puzzles many people.这个地区的争执(dispute)何时结束让很多人困惑。8It is a pity that_the_young_boy_has_to_drop_out_of_school_to_help_his_father to raise his family.遗憾的是小男孩为了帮父亲养家只好辍学。9Why_she_didnt_attend_the_wedding_party is that she had a headache.她没有出席婚礼宴会的原因是她头痛。10It is not import

26、ant who_should_attend_the_meeting instead of him.谁将代替他出席会议并不重要。.短文改错A funny thing happened my sister Tina last month. In Japan, people usually dont wear his outdoor shoes in the house or at school, and a lot of buildings had places for shoes. Her school has a special place for shoes, either. Its a s

27、hoe box. Tina teaches English in the evening. One Friday, she went to school and put her shoes in the shoe boxes as usual. After class she got ready to leave. But to the surprise, her shoes werent in the box. There were only one pair of shoes there, and they werent her shoes! She had to leave with a

28、 hurry, so she put on the shoes and left off. On Monday, in her next English class, her shoes were in a shopping bag on her desk. There was a note saying, “Im so sorry. I take your shoes by mistake！”答案：第一句：happened后加to第二句：histheir; hadhave第三句：eithertoo第六句：boxesbox第八句：第一个theher第九句：werewas第十句：within; 去掉off第十二句：taketook