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1、Astronomy: The Science Of The Stars Section I Words and Expressions生命课堂互动探究1、 重点单词 1. exist (vi.) to be present in a place or situation (vi.) (on sth) to live, especially in a difficult situation or with very little money 1）Does life exist on other planets? 2）The charity exists to support victims of
2、 crime. 3) There still exist several questions to be solved. 4) They cant exist on the money hes earning. 【拓展】 existence n. be in existence 现有的 存在的 come into existence 开始存在，开始形成 Pakistan came into existence as an independent country in 1947. 活用：完成句子：1) _ (某地有.）dinosaurs on the earth long time ago. 2
3、) When did the world _ (产生)?Summary: _2. puzzle (n.) a game, etc. that you have to think about carefully in order to answer it or do it (n.) something that is difficult to understand or explain (syn同义词)mystery (v.)to make sb feel confused because they do not understand sth 1)Their reason for doing i
4、t is still a puzzle to me. 2)a crossword puzzle 3) What puzzled me was that he left the country without telling anyone. 4) Karen puzzled over /about the question all evening. 5).He was trying to puzzle out why he had been brought to the house.【拓展】令人迷惑的 adj. _ 迷惑的 adj. _活用：完成句子：1)The deeper meaning o
5、f the poem _（仍然是个谜）.2)_(最让我迷惑的)was how he recovered from the disease without any treatment.3). When we have any _(让人迷惑的) problems, we often turn to him for help. Summary: _3. unlike prep. different from a particular person or thing不像，和不同 adj. not alike, different不相像的，不同的Unlike most systems, this one
6、 is very easy to install.For twins, they are very unlike For twins, they are very _ (相似).辨析： unlike dislike （v.) alike (adj.& adv.) 1) He likes cats but _ dogs2) She is _ any other teacher who has ever taught me 3) I have taken a strong _ to selfish people 4) The teacher treats all his students _. 活
7、用：完成句子：5)有可能他不参加会议。 _ he will not attend the meeting. 6)今年秋天约翰可能在伦敦。 John _ be in London this autumn. Summary: 1）. unlike dislike （v.) alike (adj.& adv.)区别_2）. 总结回忆一下likely 的用法和句式 _4. harmful (adj.)-harmless (adj.) harm (n. &v.) There is no harm in (sbs) doing sth Many household products are potenti
8、ally harmful. Fruit juices can be harmful to childrens teeth. Pollution can harm marine life. 活用：完成句子： 1) The court case will _(严重危害n. ）my business. 2) The court case will _(有危害的 adj.）my business. Summary: _ 重点短语 1. in time 及时；迟早，总有一天。 They caught the bus in time. If you keep on, you will succeed in
9、 time. 【拓展】 time习语： at one time _ at times_ at a time_ in time_ on time _ kill the time_ ahead of time _ all the time _ in no time _take ones time_句式 It is time that sb. did sth. 或者 It is time that sb. /should do sth. (注：should不可省略)活用：【即学即练】1）Experts have been warning _ of the health risks caused by
10、 passive smoking. A. at a time B. at one time C. for some time D. for the time 2) We were good friends _, but arent now. 3) Will I be _ for the six oclock train? 2. in ones turn in ones turn to do sth轮到某人做某事【拓展】in turn / by turnstake turns区别 in turn 1) one after the other in a particular order The c
11、hildren called out their names in turn. 2) as a result of sth in a series of events Increased production will, in turn, lead to increased profits. take turns (in sth/to do sth) ( BrE also take it in turns ) The male and female birds take turns in sitting on the eggs. We take it in turns to do the ho
12、usework. The kids took turns on the swing. by turns 1)Mary and Jane rode by turns. 2) He grew pale and red by turns.活用：翻译：1) 我们轮流打扫教室。_2) 在食堂我们按次序打饭。_summary: _随堂自测 I. 汉译英（单词和词组）1. 宗教 2. 学说；理论 3.大气层；气氛 4. 基本的；基础的 5. 万有引力；重力 6. 卫星 7.气候 8. 碰撞；坠落 9. 宇宙飞船 10. 漂浮 11. 下蛋 12.产生，分娩 13. 挡住（光线） 14. 既然15. 爆发16. 密切关注；当心 17. 向四面八方 18.感到高兴 19. 熟悉；掌握； 20. 连锁反应 II语法填空1. She _(lay)down her book and_(lie)in bed. 2. We suggest that they provide an effective warning system to prevent many of the disasters_(happen)3. Water is fundamental _ us. 4. There was a _(viole
