高一英語（下）必修三Unit 4 知識點講解

1、BackNext課文的復習和知識點的講解課文的復習和知識點的講解?1.What it was to become was a mystery until the dust began to slowly combine into a ball around the sunmovingMoving around the sun現(xiàn)在分詞做定語，表示一般的動作現(xiàn)在分詞做定語，表示一般的動作Men breaking the law will be punished.一般的動作一般的動作I see the girl dancing in the room. 正在進行的動作正在進行的動作主語從句主語從句2

2、. The problem was that the earth became _ becauseIt was not clear whether the _ shape was to last or not. violentsolidViolent adj. 猛烈的，激烈的猛烈的，激烈的,暴力的暴力的 n. violence adv. violentlySolid n. 固體固體 solid, liquid, gas adj. 固體的；實心的固體的；實心的, 無空隙的；結實的，堅固的無空隙的；結實的，堅固的 It _ loudly with fire and rock, which _ to

3、 produce the _, _, _, _ and other gases,Which were to make earths _.Step3.explodedIn timeWater vapourdioxideoxygennitrogrnatomphere not late 及時；不遲及時；不遲她來得及回來準備晚飯她來得及回來準備晚飯She will be back in time to prepare dinner. in/out of time 合合/不合節(jié)拍不合節(jié)拍: The audience clapped in time to the music.Be to do :表示不可避

4、免要發(fā)生，必須會發(fā)生表示不可避免要發(fā)生，必須會發(fā)生In such a fierce competition, a person has to make every effortIf he _.A. has succeeded B. is to succeed C. would succeed D. will succeedBStep 4As the earth _, water began to _ on its_.Cool downappearsurfaceQuestion: why the earth was going to be different from other planets

5、 going around the world.1. It allowed the earth to dissolve _ gases.2. That made it possible for life begin to develop.harmfulSmoking _(對身體有害）對身體有害）peoples health.Is harmful toThe development of lifeThe development of life1.What scientists think is that the earth was different because of the _ of _

6、growing in the water on its surfacearrivalSmall plantsAbility: they _ and _ the oceans and seas_ _. This encouraged the _ of life.multipliedfilledwithoxygendevelopment_ and _(ability):_and_helped life to develop_appear _Ability:_for the first timeAbility: produced young _dinosaurs_ability: Produced

7、their young_shellfishAll sorts of fishGreen plantsTaking carbon dioxide from the atmosphereFilling the air with oxygenreptilesinsectsamphibiansBe able to . As well asLand animalsGenerally by laying eggsmammalsFrom within their boydies humans came into being and spread all over the world.What life de

8、veloped after mammals? developed new methods of growing food(3) What humans developed? developed new methods of hunting developed new methods of moving around(5) What humans developed ? (6) What problem are humans causing?putting carbon dioxide into the atmospherePrevent heat from escaping from the

9、earth. heat from the sun is trapped greenhouse effect and global warming temperature risesNextBack ice in the North Pole melts greenhouse effect and global warming sand stormWhether life will continue on the earth for millions Of years to come will depend on whether this Problem can be solved.Depend

10、 on : 依賴，依靠依賴，依靠It /that all depends那得看情況而定那得看情況而定alternative words and expressionshard or firmusing force to hurt or attackscientific study of the starsusually or widelystop fromnatural large object that circles the sunthe changes as plants or animals grow olderburstThe covering (of something)Way o

11、f doing thingsWord-consolidation-I Fill in the blankssolidviolentastronomygenerallyprevent fromplanetdevelopmentexplodesurfacemethodWord-consolidation-II2.Complete this passage with some of the above words.My friend Li Yanping was really very interested in _.he liked to watch changes in the moon,the

12、 only natural satellite of the earth through his telescope. One evening he thought he saw a huge comet _as it hit the moon. The _of the moon produced a lot of dust that became _like a large ball. It seemed as if it would multiply and become a new _.Li Yanping thought he was seeing the _of the universe until he noticed some dirt on his telescope!he was very disappointed.astronomyexplodesurfacesolidplanetdevelopmentWord-consolidation-III3.Put these words into the more suitable of the two boxes.Fierce