英语必修 第三册Unit 4 Space Exploration教案

这是一份英语必修 第三册Unit 4 Space Exploration教案，共6页。
主题语境：人与自然
主题群：宇宙探索
子主题：地球与宇宙奥秘探索
语篇类型：文本、练习
文本分析：
[What]本节课围绕主题语境设计了三个活动：第一部分是认识动词不定式并分析其在句子中的作用和意义；第二部分使用动词不定式改写句子；第三部分用动词的适当形式填空。
[Why]使用动词不定式描述太空探索的一些事实和所做的努力。
[Hw]本课通过改写句子和短文填空的形式，练习动词不定式的用法；通过描述探索太空的一些事实和人类目前所做的努力，加深学生对主题意义的理解。
课时目标
1.通过描述人类探索太空的事实和所做的努力，在语境中学习动词不定式的用法。
2.获取更多主题语境的信息，加深对主题意义的理解。
重点难点
重点：
动词不定式作定语和状语的具体用法。
难点：
使用动词不定式描述太空探索的事实和所做的努力。
教学准备
教师准备：
动词不定式的相关练习
学生准备：
预习动词不定式的用法。
教学过程
Step I 学习理解
活动一：识别动词不定式（Part 1, P42）
1.Lk at the fllwing sentences and underline the infinitives. Ask students t wrk in pairs and discuss the functins and meanings f the infinitives.
（1）I trained fr a lng time t fly airplanes as a fighter pilt.（目的状语）
（2）As we all knw，an astrnaut needs t be healthy and calm in rder t wrk in space.（目的状语）
（3）First f all，yu must be intelligent enugh t get a related cllege degree.（目的状语）
（4）Sme scientists were determined t help humans realise their dream t explre space.（后置定语）
（5）On 12 April 1961，Yuri Gagarin became the first persn in the wrld t g int space.（后置定语）
2.Find mre sentences cntaining infinitives frm the text n Page 40 41，and discuss briefly the majr functins f them with a partner. Then make a shrt summary in a table r mind map.
【设计意图】通过寻找和辨认动词不定式，讨论其功能和意义，有助于学生在语境中初步理解和认识动词不定式的用法。
Step Ⅱ 应用实践
活动二：用动词不定式改写句子（Part2，P42）
Rewrite the sentences using infinitives r “in rder t/s as t +d” .
EXAMPLE
（1）In 2003 Yuri Malenchenk became the first persn wh gt married in space.→In 2003 Yuri Malenchenk became the first persn t get married in space.
（2）In space，astrnauts cllect all dirty water s that it can be recycled fr later use.
→In space，astrnauts cllect all dirty water s as t recycle it fr later use.
2.Check the answers，
Suggested answers：
（3）Mankind has always been curius abut the universe and many peple have the dream t fly int space ne day.
（4）Astrnauts’ bnes and muscles can get very weak in space due t the lack f gravity，s they need t exercise every day t/in rder t/s as t stay health.
（5）Astrnauts have t use tape t stick everything dwn while wrking in space t/in rder t/s as t keep everything frm flating ff.
（6）During a spacewalk, astrnauts have t mve slwly t/s as t/in rder t keep their bdies under cntrl.
【设计意图】通过用动词不定式改写句子，让学生在练习中感受、总结出动词不定式的用法。
活动三：补全句子，使两句意思相近或相同，每空一词。
1.He was s angry that he culdn’t say anything.
He was t angry anything.
2.I dn’t knw when we will have the meeting.
I dn’t knw when the meeting.
3.We have made a plan that we shuld learn frm Lei Feng.
We have made a plan frm lei Feng.
4.Reading English in the mrning is very imprtant.
It is very imprtant yu English in the mrning.
5.He was s strng that he culd lift the stne.
He was strng the stne.
6.We need smene wh helps with the wrk.
We need smene with the wrk.
7.They gt up early s that they culd get there in time.
They gt up early there in time.
8.His brther decided that he wuld buy the bk.
His brther decided the bk.
9.He hpes that he can visit the great Wall.
He hpes the great Wall.
10.I saw him g int the rm.
He was seen int the rm.
Suggested answers：
t say 2.t have 3.t learn 4fr；t read 5.enugh；t lift 6.t help 7.in rder
t get 8.t buy 9.t visit 10.t g
活动四：选择填空
1.This cmpany was the first prtable radis as well as cassette tape recrders in the wrld.
A. prducing B. t prduce C. having prduced D. prduced
2.The purpse f new technlgy is t make life easier， it mre difficult.
A. nt making B. nt make C. nt t make D. nr t make
3.Helen had t shut abve the sund f the music.
A. making herself hear B .t make herself hear
C. making herself heard D. t make herself heard
4. I dn’t knw whether yu happen but I am ging t study in the this September.
A. t be heard B. t be hearing C. t hear D. t have heard
5. The news reprters hurried t the airprt, nly the film stars had left.
A .t tell B. t be tld C. telling D. tld
6. Yu were silly nt yur car.
A. t lck B. t have lcked C. lcking D. having lcked
7. The teacher asked us s much nise.
A. dn’t make B. nt make C. nt making D. nt t make
8. An army spkesman stressed that all the sldiers had been rdered clear warnings befre firing any shts.
A. t issue B. being issued C. t have issued D. t be issued
9. The children all turned the famus actress as she entered the classrm.
A. lked at B .t lking at C .t lk at D. lk at
10.The bank is reprted in the lcal newspaper in brad daylight yesterday.
A. rbbed B. t have been rbbed C. being rbbed D. having been rbbed
Suggested answers：
1-5 BCDDB 6-10 BDACB
Step Ⅲ 迁移创新
活动五：情境应用（Part3，P42）
Ask students t cmplete the passage with the crrect frms f the verbs in brackets.
Suggested answers：
Sending peple t ther planets r even beynd the slar system is nt an easy gal t achieve（achieve）.One f the prblems is that the trip wuld take a very lng time.
Fr example，using（use）current technlgy，it wuld take ver tw years t get（get）t the clsest planet，Mars，and back. Althugh light is the fastest thing knwn（knw）in the universe，it culd take mre than fur years t reach the nearest star system. Will scientists figure ut a way t stre（stre）sufficient fd and water fr the lng jurney？Is it pssible t travel faster than light？N ne knws the answers yet. Hwever，space scientists never give up They are experimenting with grwing crps in space s as t help（help）astrnauts get enugh fd n lnger jurneys thrugh space.
【设计意图】将语法练习置入本单元的语境中，学生通过在特定的语境中使用动词不定式，加深了对动词不定式用法的理解，改变了语法练习的方式，提高了学习语法的兴趣。
板书设计
Unit 4 Space Explratin
Perid Ⅲ Discvering Useful Structures
Ⅰ.学习理解
活动一：识别动词不定式
Ⅱ.应用实践
活动二：用动词不定式改写句子
活动三：补全句子
活动四：选择填空
Ⅲ.迁移创新
活动五：情境应用