人教版必修三unit4vocabularyPPT演示課件

1、1unit4 words2group 1:topic-related words1. write down the main gases(氣體） in the atmosphere(大氣層）2. different kinds of animals 3. different kinds of scientists3group 2: phrases1.write down 6 phrases with “time”2.write down 6 phrases with “turn” 3.write down 6 phrases with “break” requirement: widely u

2、sed phrases4group 3:prefix and suffix(前綴或后綴）1.find out 6 words with “en” or “en”2.find out 6 words with “-less” 3.find out 6 words with “un-”5group 41.find out as many pairs of words as possible (eg: religion- religious)2.conclude the phrases in this unit6group 1:topic-related words 1. write down th

3、e main gases(氣體）in the atmosphere(大氣層） 2. different kinds of animals 3. different kinds of scientists71.the gases in the atmosphere oxygen（氧） nitrogen （氮） rare gases（稀有氣體） carbon dioxide（二氧化碳） vapour（水蒸汽）other matters (物質(zhì))：酸acid， 碳carbon, 原子atom8地球大氣地球大氣the earths atmospherenitrogenoxygendioxidecarb

4、onvapour 9 2. different kinds of animals shellfish 水生有殼動物amphibian 兩棲類動物reptile 爬行類動物mammal 哺乳動物 can you give them a right order according to its development? can you give us 2 examples for what is shellfish , amphibian, reptile and mammal?10 3. different kinds of scientists physicist 物理學(xué)家 biologist

5、 生物學(xué)家 geologist 地質(zhì)學(xué)家 chemist _ artist _ can you write out the original form of these words?化學(xué)家藝術(shù)家11group 2: phrases1.write down 6 phrases with “time”2.write down 6 phrases with “turn” 3.write down 6 phrases with “break” requirement: widely used phrases121.the phrases with “time”1）in time2）on time 3）

6、from time to time4）for the first time 5）at one time 6）at a time7）at times8）at no time9）in no time及時，終于，遲早及時，終于，遲早按時按時不時地不時地第一次第一次曾經(jīng)，一度曾經(jīng)，一度每次每次間或，偶爾間或，偶爾絕不，從來沒有絕不，從來沒有立即，馬上立即，馬上= soon132. phrases with “turn”1) in ones turn 2) turn out3) turn up4) turn to 5) turn down6) turn on7) turn off8) take turn

7、s to do9) turn in= hand in1)輪到某人輪到某人2） 結(jié)果是結(jié)果是3）出現(xiàn)，調(diào)大）出現(xiàn)，調(diào)大4）轉(zhuǎn)向）轉(zhuǎn)向5）拒絕，調(diào)?。┚芙^，調(diào)小6）打開）打開7）關(guān)上）關(guān)上8） 輪流做某事輪流做某事9）上交）上交143. phrases with “break”1) break out2) break in3) break down4) break off5) break up6) break away from1)爆發(fā)爆發(fā)2）闖入，插嘴）闖入，插嘴3）崩潰，瓦解，出故障）崩潰，瓦解，出故障4）中斷）中斷5）分解）分解6）掙脫）掙脫15group 3:prefix and suff

8、ix(前綴或后綴）1.find out 6 words with “en” or “en”2.find out 6 words with “-less” 3.find out 6 words with “un-”161. words with “en” or “en” 使 (adj.-v.) less-lessen 1.wide-_ 2.sharp_3.short_ 4.weak-_5.deep-_ 6.large-_7.rich-_ 8.able-_do you know the chinese meaning of the above words? v. 減少，減輕減少，減輕deepens

9、harpenshortenweakenwidenenlargeenrich enable 17后綴后綴-less（否定意義）（否定意義）(noun-adj.)weight-weightless-weightlessly1.end- 2.care-3.use- 4.hope-5.penny- 6.job-7. home-2. words with “-less”do you know the chinese meaning of the above words?endlesscarelessuselesshopelesspennilessjoblesshomeless183.words with

10、 “un-”前綴前綴 un（否定意義）（否定意義）likeunlike1.believable-unbelievable 2.certain-uncertain 3.luckily-unluckily 4.willingly-unwillingly5.dress-undress v. 脫衣服脫衣服 6.cover-uncover v.揭開揭開,揭穿揭穿,揭示揭示 do you the chinese meaning of the above words?19group 4 1.find out as many pairs of words as possible (eg: religion-

11、religious) 2.conclude the phrases in this unit201.pairs of words noun-adjective1.religion-religious2.globe-global3.violence-violent4.presence-present5.harm-harmful6.extinct-extinctive-extinction7.fundament-fundamental8.weight-weightless-weightlessly21verb-noun1.pull-pull2.float-float3.puzzle-puzzle2

12、.conclude the phrases in this unit22phrases in this unit:1.solar system2. in time3.give birth to4.in ones turn5.preventfrom6.block out7.cheer up8.now that9.get the hang of10.break out11.watch out12.lay eggsa.下蛋下蛋b. 產(chǎn)生，分娩產(chǎn)生，分娩c. 感到高興感到高興d. 當(dāng)心，提防當(dāng)心，提防e . 爆發(fā)爆發(fā)f. 既然既然g. 熟悉，掌握，理解熟悉，掌握，理解h. 擋?。ü饩€）擋?。ü饩€）i.

13、 阻止，制止阻止，制止j.輪到某人輪到某人k. 及時，終于，遲早及時，終于，遲早l. 太陽系太陽系 lkbjihcfgeda23 now that同同since相似相似, 語氣較弱語氣較弱, 強調(diào)人們強調(diào)人們已知的事實。已知的事實。既然你忙既然你忙, 就讓我給你做吧。就讓我給你做吧。now that you are busy, let me do it for you.既然人都齊了既然人都齊了, 咱們開始干吧。咱們開始干吧。now that everyone is here lets start work2425fundamentalnfresh air is fundamental to good health.n新鮮空氣對健康是不可缺少的。新鮮空氣對健康是不可缺少的。nso, one of the fundamental problems in medicine is that you and i, and all of us, we go to our doctor once a year.n所以醫(yī)學(xué)上一個根本的問題是你和我所以醫(yī)學(xué)上一個根本的問題是你和我,以及我們所有的人以及我們所有的人,我們一年看一次醫(yī)我們一年看一次醫(yī)生。生。26multiply1.乘, 相乘 one can make 18 by mult