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1、,必修 3 Unit 4 Astronomy:the science of the stars,重点单词,1. _n. 天文学 _n. 天文学家 _ n. 宇航员 2. _ n. 系统；体系；制度 3. _ n. 宗教；宗教信仰 _ adj. 宗教上的；信奉宗教的；虔诚的 4. _ n. 学说；理论 5. _n. 球体；地球仪；地球 _adj. 全球性的；全世界的 6. _adj. 猛烈的；激烈的；强暴的 _ n. 暴力；激烈；猛烈 _ adv. 暴力地；猛烈地 7. _ n. 大气层；气氛,astronomy astronomer astronaut system religion reli
2、gious theory globe global violent violence violently atmosphere,学生用书见P69,重点单词,unlike fundamental harmful harm harmless multiply puzzle Puzzled biology biologist satellite physicist physics,8. _ prep. 不同；不像 9. _adj. 基本的；基础的 10. _ adj. 有害的 _n.& vt. 损害；伤害；危害 _adj. 无害的 11. _ vi.& vt. 乘；增加 12. _n. 谜；难题vt
3、.& vi.（使）迷惑；（使）为难 _ adj. 迷惑不解的 13. _n. 生物学 _n. 生物学家 14. _n. 卫星；人造卫星 15. _n. 物理学家 _n. 物理学,重点单词,climate weather crash pull push float exist existence exhaust exhaustion exhausted exhausting,16._n. 气候 _n. 天气 17. _vi.使人精疲力竭的,重点短语,match.with in time give birth to in ones turn prevent.from block out cheer
4、 up now that break out,1._ 使和相匹配 2. _ 及时；终于 3. _ 产生；分娩 4. _ 轮到某人；接着 5. _ 阻止；制止 6. _ 挡住（光线） 7. _ 感到高兴；感到振奋 8. _ 既然 9. _ 突发；爆发,重点短语,watch out think of.as come into being make a trip get close to. step forward,10._ 密切注视；当心；提防 11. _ 把看作是 12. _ 产生；形成 13. _ 去旅行 14. _ 接近 15. _ 向前迈步,1.make it+形容词/名词+to do s
5、th. This produced a chain reaction, which made it possible for life to develop.（教材P26） 2.“A+倍数+as+形容词或副词原级+as+B”的倍数表达法 But when I tried to step forward， I found I was carried twice as far as on the earth and fell over.（教材P31） 3.now that引导原因状语从句 “Oh dear，” I cried， walking does need a bit of practice
6、 now that gravity has changed.（教材P31）,重点句型,语法要点,主语从句 What it was to become was uncertain until between 4.5 and 3.8 billion years ago when the dust settled into a solid globe.（教材P25） Why they suddenly disappeared still remains a mystery.（教材P26）,atmosphere n.大气层，空气；环境，气氛 They were in time to produce c
7、arbon,nitrogen,water vapour and other gases, which were to make the earths atmosphere.（教材P26） 最终产生了碳、氮气、水蒸气和其他气体，从而形成了地球的大气层。,学生用书见P70,The waste they create goes into the atmosphere and makes us sick. 它们制造出来的废气进入大气中，导致我们生病。 The simple atmosphere of the office calmed me. 办公室的简单气氛让我平静下来。 Ever since th
8、eir quarrel,there has been an unpleasant atmosphere in the office. 自从他们发生口角以来，办公室里总有一种不愉快的气氛。,harmful adj.有害的 What many scientists believe is that the continued presence of water allowed the earth to dissolve harmful gases and acids into the oceans and seas. (教材P26) 很多科学家相信，由于地球上长期有水存在，它使得地球得以把有害气体和
9、酸性物质溶解在海洋里。,(1) be harmful to. 对有害 harm n.& vt. 伤害；损害 do harm to./do.harm 损害 There is no harm in doing sth. /It does no harm to do sth. 做某事是个好主意(或没有坏处) (3) harmless adj. 无害的,(2),Your smoking can be harmful to the health of your children. 你吸烟会危及孩子的健康。 Air pollution and noise pollution caused by autom
10、obiles do harm to our health. 由汽车引起的空气和噪音污染对我们的健康造成了危害。 There is no harm in drinking occasionally. 偶尔喝点酒没有什么害处。 It does no harm to read more books. 多读点书对你没有害处。 The trouble was sparked off by an apparently harmless phrase. 这场麻烦是由一句明显无恶意的话引起的。,puzzle vt.使迷惑；使为难；使窘困； vi.感到迷惑 n.(游戏的)猜谜；难题；谜 How life beg
11、an on earth is one of the biggest puzzles that scientists found hard to solve. （教材P27） 地球生命如何起源是科学家们觉得很难解决的最大的难题之一。,puzzle over/about sth. 苦苦思索；仔细琢磨 puzzle sth.out 琢磨出的答案 puzzled adj. 迷惑不解的(常用来修饰人) puzzling adj. 令人迷惑不解的(常用来修饰事物),(1),(2),I am puzzled by his failure to reply. 我弄不懂他为什么不给我回信。 What puzzl
12、es me is why he left the country without telling anyone. 令我百思不解的是他为什么悄悄地离开了这个国家。 I have been puzzling about this question for weeks now. 我对这个问题已冥思苦想了好几个星期。 She managed to puzzle out the meaning of that long sentence. 她总算把那个长句的意思揣摩出来了。 Her puzzled look on her face suggested she didnt understand what
13、I said. 她脸上迷惑的表情表明她不明白我说的话。,pull n& vt.拉(力)；拖；牵引力 As the rocket rose into the air， we were pushed back into our seats because we were trying to escape the pull of the earths gravity. （教材P30） 随着火箭的升空，我们被重重地推回到座位上，因为我们正尽力摆脱地球的引力。,pull back 撤回 pull down 拆毁；摧毁;把往下拉；使下跌 pull in (车辆)进站停靠；靠边，停靠 pull on 穿；戴
14、 pull out 驶出；(使)退出；（列车）出站 pull over (车辆)向路边停靠；驶向路边 pull through 康复，痊愈；渡过难关 pull up 拔起；停车；阻止 Pull oneself together 振作起来,He pulled the door open and rushed out. 他拉开门，冲了出去。 Several houses were pulled down to make way for the new road. 为了给新修的道路让路，几座房屋被拆毁了。 The police car signaled to us to pull in. 警车发出信号，要我们驶向路边停靠。 We waved as the train pulled out of the station. 火车驶出车站时我们挥手告别。 The doctor told me that I would pull through. 医生告诉我我会康复的。,in time 及时；终于；总有一天 They were in time
