Unit 4 Astronomy: the science of the stars天文学：恒星科学,. 单词盘点根据词性和汉语意思写出词汇1. _ (n. )天文学2. _ (n. )系统；体系；制度3. _ (n. )学说；理论4. _ (n. )大气层；气氛5. _ (adj. )基本的；基础的,astronomy,system,theory,atmosphere,fundamental,6. _ (adv. ) 因此；于是7. _ (vt. & vi. ) （使）迷惑；（使）为难 (n. ) 谜；难题8. _ (adj. ) 温和的；文雅的9. _ (vi. &vt. ) 碰撞；坠落10. _ (n. &vt. ) 拉（力）；拖；牵引力11. _ (vi. &vt. ) （使）浮动；（使）漂浮 (n. ) 漂浮物,thus,puzzle,gentle,crash,pull,float,12. _ (adj. )猛烈的；激烈的；强暴的 _ (n. )暴力 _ (adv. )暴力地；猛烈地13. _ (prep. )不同；不像 _ (vt. )喜欢(prep. )相像 _ (adj. )可能的14. _ (adj. )有害的_ (n. &v. )伤害 _ (adj. )无害的15. _ (vi. )存在；生存 _ (n. )存在；生存,violent,violence,violently,unlike,like,likely,harmful,harm,harmless,exist,existence,【品词自测】根据所给词的适当形式填空The robbers hit them _. They couldnt bear it any more so they decided to answer _ with _ and began their _ fightback. (violent)This object gives off _ gases. They may do _ to our health. You must make the object _ before you use it. (harmful),violently,violence,violent,harmful,harm,harmless,violence,. 短语回放1. 及时；终于 _2. 产生；分娩 _3. 轮到某人；接着 _4. 阻止；制止 _5. 挡住（光线） _,in time,give birth to,in ones turn,prevent. . . from,block out,6. 感到高兴；感到振奋 _7. 既然 _8. 突发；爆发 _9. 密切注视；当心；提防 _10. 和；以及 _,cheer up,now that,break out,watch out,as well as,. 句式扫描1. _ (它会变成什么样)was uncertain until between 4. 5 and 3. 8 billion years ago when the dust settled into a solid globe. 2. The earth became _ (如此猛烈以至于) it was not clear whether the shape would last or not.,What it was to become,so violent that,3. This produced a chain reaction, which _ (使得生命得以发展). 4. But when I tried to step forward, I found I was carried _ (两倍远)on the earth and fell over.,made it possible for,life to develop,twice as far as,【仿句自测】根据下面句式仿写句子make it +adj. /n. + to do sth. 仿写：他早上六点起床成了惯例。_倍数+as. . . as. . . 句型仿写：我的收入是他的两倍。_,He made it a rule to get up at 6 in the morning.,My income is twice as much as his.,1. violent adj. 猛烈的；激烈的；强暴的（1）violently adv. 猛烈地；激烈地（2）violence n. 暴力；暴行take. . . by violence 强夺do violence to. . . 对行凶；强暴对待,The violent wind dashed the ship against a huge rock. 狂风将船猛地推向一块巨大的礁石。Meanwhile the violence continued in Libya. 在此期间，利比亚暴力冲突仍然在持续。The storm grew _ _ . 这场暴风雨变得更加猛烈了。,more violent,2. pull n. &vt. 拉（力）；拖；牵引力pull away (车辆等)驶离；开走pull in (车辆等)进站；靠停 pull down 拆除； (把身体)拖垮pull out 拔出； 驶出； 摆脱(困难)pull through 恢复健康；渡过难关pull up 停车,He pulled the door open and rushed out. 他拉开门，冲了出去。The police car signalled 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 _ _ of the station. 火车驶出车站时我们挥手告别。The doctor told me that I would _ _ . 医生告诉我，我会康复的。,pulled out,pull through,【助记】,推 push 拉 pull,3. in time 及时；终于Will you be back in time for dinner? 你会及时赶回来吃饭吗？I should be back in time to watch the show. 我应该及时赶回来看那场演出。,【拓展】翻译以下短语at a time _at one time _at no time _at times _on time _in no time _take ones time _,每次；一次,曾经；一度,决不,有时,准时；按时,立刻；马上,别着急；慢慢来,4. prevent. . . from阻止；制止（1）prevent sb. (from) doing sth. stop sb. (from)doing sth. 阻止，制止keep sb. from doing sth. （2）protect sb. from/against保护某人使免受,Guards stood at the doors to prevent anyone from leaving. 守卫站在门口阻止任何人离开。His advice kept me from making a serious mistake. 他的忠告使我免于犯一个严重的错误。Once he has made up his mind，no one can _ _ _ _ _ the plan. 一旦他下定决心，谁也阻止不了他执行这个计划。,