2022年高中英语必修三《Unit4Astronomythescienceofthestars》精品教案 .pdf

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1、（新人教版）高中英语必修三Unit4Astronomy the science of the stars精品教案Teaching aims:1. Enable the students to learn the usage of key words and phrases and find the rules of the subject clause 2. Get the students to cultivate the awareness of protecting the earth Teaching important/difficult points: The subject cl

2、ause Teaching methods:Help the students practice learning about language, using a co-operative method. Teaching aids: A multiple-media computer & a blackboard Teaching procedures:Step I Review the important phrases in the text.1.向四面八方 _ 2.及时，终于 _ 3.冷却；平静下来 _ 4.与不同_ 5. 依赖；决定于 _ 6. (除 . 之外)也，又_ 7.成长为，

3、渐成，变为_ 8.下蛋_ 9.产生， 分娩_ 10.轮到某人，接着_ 11. 阻止_ 12.作为 . 的结果，由于_ Step II.Language points:名师归纳总结 精品学习资料 - - - - - - - - - - - - - - -精心整理归纳 精选学习资料 - - - - - - - - - - - - - - - 第 1 页，共 8 页 - - - - - - - - - 1. It exploded loudly with fire and rock they were in time to produce the water vapour,.in time: soo

4、ner or later; 迟早；最后。即学即练 Translation: I believe that the 35 trapped coal miners will be found in time. _ in time : not late 及时；不迟即学即练她来得及赶上最后一班汽车。 She will _ 拓展: match the parts of the phrases about “time ” belowon time 曾经in no time 从前at a time 不时地at one time 按时;准时once upon a time 立刻,马上from time to

5、time 每次;一次2. Others, called amphibians, were able to live on land as well as in the water. as well as“(除 . 之外)也，又”,可连接并列的单词或短语eg: Mary as well as her parents _. （喜欢听音乐）拓展： as well 相当于 too，一般放在句末。名师归纳总结 精品学习资料 - - - - - - - - - - - - - - -精心整理归纳 精选学习资料 - - - - - - - - - - - - - - - 第 2 页，共 8 页 - - -

6、- - - - - - eg: He is a worker，and _. （也是一位诗人）辨析： as well as相当于 not only but also，但两者在用法上有不同not onlybut also侧重后者，as well as则着重前者，即 A as well as B= not only B but also A。即学即练Mr. Brown has experience as well as knowledge. =Mr. Brown_ 布郎先生既有知识又有经验。3.They produced young generally by laying eggs. Fill in

7、 the table: 动词过去式过去分词现在分词意义lie Lain 躺，位于lie lied lying lay Laid 搁，放，下蛋巧记口诀：规则撒谎，不规则躺：躺过下蛋，下蛋不规则。即学即练He _ in bed and _to me that his cow _ an egg. A. laid; laid; laid B. lay; lay; lain C. lied; laid; lain D. lay; lied; laid 4. , which prevents heat from escaping from the earth into space. prevent (fr

8、om) doing 阻止，制止辨析 prevent from、 keep from stop from 名师归纳总结 精品学习资料 - - - - - - - - - - - - - - -精心整理归纳 精选学习资料 - - - - - - - - - - - - - - - 第 3 页，共 8 页 - - - - - - - - - 注意： prevent和 stop 后面的介词 from 可以省略。但是在被动语态中，from 不可省略。而 keep sb. from doing sth. 中的 from，无论在主动语态还是被动语态中均不可省略。即学即练We must prevent the

9、 river from_. A. having polluted B. being polluting C. being polluted D. to polluted Translation: 政府正在采取措施阻止房价的增长。_ 5. Whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved. depend on 相信，信赖 , 依靠,依赖, 视而定，取决于即学即练All living things_( 依靠)

10、the sun for their growth. 拓展： depend on it 没问题，请放心（句末或句首）That /It (all) depends. 那得看情况而定高考链接How long are you staying? I don t know._. (08江苏) A. Thats OK B. It depends C. Never mind D. It doesnt matter6. Why they suddenly disappeared still remains a mystery. 它们为什么突然消失至今仍是个谜。名师归纳总结 精品学习资料 - - - - - -

11、- - - - - - - - -精心整理归纳 精选学习资料 - - - - - - - - - - - - - - - 第 4 页，共 8 页 - - - - - - - - - 解析：这是一个含有主语从句 _ 的复合句，其中 why是一个连接副词， 在从句中充当 _。引导主语从句的关联词有三类：从属连词 that, whether(不做成分只起连接作用). 连接代词 who, whom, whose, what, which, whoever, whatever, whichever( 在从句中充当主语或宾语 )以及连接副词where, when, how, why（在从句中充当状语）eg

12、:Whether he ll come hereisn t clear.他是否会来这里还不清楚What she did is not yet known. 她干了什么尚不清楚。Whoever comes is welcome. 不论谁来都欢迎。How this happened is not clear to anyone. 这事怎样发生的 , 谁也不清楚。主语从句 (The Subject Clause) 通常放在主句谓语动词之前或由形式主语 it 代替,而本身放在句子末尾以保持句子的平衡。eg; It s clear that the drought-hit southwest provi

13、nces need our help. 含有主语从句的句子在课文中还有几个，试找出其一并加以分析_ 即学即练名师归纳总结 精品学习资料 - - - - - - - - - - - - - - -精心整理归纳 精选学习资料 - - - - - - - - - - - - - - - 第 5 页，共 8 页 - - - - - - - - - . _ was most important to her, she told me, was her family. (08 山东) A. What B. That C. This D. Which . _ worries us a lot that so

14、 many students drop out of school in the poor mountainous areas. A. It B. That C. One D. What . It is pretty well understood _ controls the flow of carbon dioxide in and out the atmosphere today. (2003 上海) A. that B. when C. what D. how . _team wins on Saturday will go through to the national champi

15、onships. (06 山东) A. No matter what B. No matter which C. whatever D. whichever Step III.Consolidation Complete the following sentences with the words and phrases below in the correct formin time, preventfrom, depend on, lie, break out, as well as, exist 1. The sun is very important to the mankind. M

16、an _it for heat and light. 名师归纳总结 精品学习资料 - - - - - - - - - - - - - - -精心整理归纳 精选学习资料 - - - - - - - - - - - - - - - 第 6 页，共 8 页 - - - - - - - - - 2. The First World War _in 1914 and ended in 1918. 3. Explorers have been sent to Mars to make sure whether life_ on it. 4. I miss my hometown so much that

17、nothing can_ me_ going back. 5. If we dont hurry up , we wont be _ to catch the airplane.6. Mary_ her sisters studies Chinese in China. 7. The girl _ to me that the hen had _ two eggs the day before. Improvement (Mini-writing)地球是我们赖以生存的家园。 然而随着污染的加重， 地球正变得越来越热。我们所能做的就是及时采取措施阻止温室效应(Greenhouse effect

18、)的加剧。保护环境不仅是保护地球，也是保护我们自己。人类能否在地球上延续取决于这个问题能否得到解决。(尽量使用本节所学知识 ) Tips: depend on, with the growth of, it is becoming, what we should do is , as well as _名师归纳总结 精品学习资料 - - - - - - - - - - - - - - -精心整理归纳 精选学习资料 - - - - - - - - - - - - - - - 第 7 页，共 8 页 - - - - - - - - - _ Step IVThe following table is

19、 for you to evaluate what you have learned in this unit by yourself. Fill in the table with a tick according to your level. Items Easy So-so A bit hard Difficult Words & phrases Language focus Content of text Grammar Step V Homework:1 Go over and learn the usages of key words and phrases by heart. 2 Summarize the rules of the grammar in your own way名师归纳总结 精品学习资料 - - - - - - - - - - - - - - -精心整理归纳 精选学习资料 - - - - - - - - - - - - - - - 第 8 页，共 8 页 - - - - - - - - -