内容正文:
Unit 4 Astronomy: the science of the stars
备考第1步——疯狂晨背在积累·背后自检(一)单词语境记忆
1.crash into the earth 与地球相撞
2.a widely accepted theory 一种普遍为人们所接受的理论
3.the earth's atmosphere 地球的大气层
4.unlike the earth 和地球不同
5.a chain reaction 一个连锁反应
6.the pull of the earth's gravity 地球的引力
7.float on the surface of the water 漂浮在水面上
8.We visited the moon in our spaceship!
我们乘宇宙飞船游览了月球!
(二)单词派生记忆
1.exist vi.存在;生存→existence n.存在;生存
2.violent adj.猛烈的;激烈的;强暴的→violence n.暴力→violently adv.暴力地;猛烈地
3.harm n.& vt.伤害→harmful adj.有害的→harmless adj.无害的
4.globe n.球体;地球仪;地球→global adj.全球性的;全世界的
5.puzzle vt.& vi.(使)迷惑;(使)为难 n.谜;难题→puzzled adj.感到困惑的→puzzling adj.令人困惑的
6.religion n.宗教;宗教信仰→religious adj.宗教上的;信奉宗教的;虔诚的
7.biology n.生物学→biologist n.生物学家→biological adj.生物的
8.gentle adj.温和的;文雅的→gently adv.温和地;文雅地
9.present adj.到场的,出席的→presence n.出席,到场;存在
10.exhaust vt.用尽;耗尽;使精疲力尽→exhausted adj.使精疲力尽的
(三)核心短语必背
1.now that 既然
2.break out 突发;爆发
3.block out 挡住(光线)
4.in time 及时;终于
5.lay eggs 下蛋
6.cheer up 感到高兴;感到振奋
7.depend on 依靠;取决于
8.prevent heat from escaping 使热量不能释放
9.give birth to a new being 孕育新生命
10.watch out for sharp bends 当心急转弯
11.get the hang of learning English 掌握学英语的门道
12.Thus they have, in their turn, become the most important animals on the planet.
于是,它们接着成了这个行星上最重要的动物。
(四)教材原句必背
1.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.(随后它会变成什么没人能知道,直到45~38亿年前,这团尘埃才慢慢地形成了一个固体的球状物。)
2.The earth became so violent that it was not clear whether the shape would last or not.(地球变得如此激烈动荡,以至于不知道这个固体形状是否会继续存在下去。)
3.This produced a chain reaction,which made it possible for life to develop.(这就产生了连锁反应,使生命的发展成为可能。)
4.But when I tried to step forward,I found I was carried twice as far as on the earth and fell over.(而当我试着向前迈步时,我发觉我被送出去很远,步子的跨度竟是在地球上的两倍,因而我摔倒了。)
5.We watched,amazed as fire broke out on the outside of the spaceship as the earth's gravity increased.(我们惊奇地看着,随着地球引力的增加,宇宙飞船的外层燃烧起来。)
背后·语基15分钟检测
Ⅰ.单词拼写
1.Accor