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必修3 Unit 4 Astronomy：thescience of
the stars
an English physicist，discovered gravity.Based on his theory， Isaac Newton，astronomers predicted that another planet might exist in the orbit of Uranus(天Uranus，having 27 known natural satellites，is visible to the naked eye.It's 王星)．the third largest planet in terms of size in the Solar System，with its mass roughly 14.5 times that of Earth.It's much closer to the sun，but this does not prevent it from being the coldest，because unlike the other planets，Uranus gives off less heat than it absorbs from the sun.Its climate also seems less violent.Traces of carbon dioxide，oxygen and hydrogen have been confirmed in its atmosphere.
默写识记 ◆默写单词
1．system n． 2．physicist n. 3．theory n. 4．violent adj. 5．gentle adj. 6．unlike prep. 7．exist vi. 8．harmful adj. 9．puzzle n.
v.
10．climate n. 11．float v.
系统；体系；制度 物理学家 学说；理论
猛烈的；激烈的；强暴的 温和的；文雅的 与??不同；不像 存在；生存 有害的 谜；难题
(使)迷惑；(使)为难 气候
(使)浮动；(使)漂浮
n.
◆记住词义 1．astronomy n. 2．religion n. 3．atom n. 4．globe n. 5．dioxide n. 6．atmosphere n. 7．fundamental adj. 8．chain n. 9．multiply v. 10．biology n. 11．gravity n. 12．satellite n. 13．crash v. ◆写出短语 1．give birth to 2．in one's turn 3．cheer up 4．break out 5．watch out for 6．block out 7．far from 8．now that 名词后缀-ist 1．novelist 2．receptionist 3．tourist 4．journalist
漂浮物
天文学 宗教；宗教信仰 原子
球体；地球仪；地球 二氧化物 大气层；气氛 基本的；基础的 链子；连锁；锁链 乘；增加 生物学 万有引力；重力 卫星；人造卫星 碰撞；坠落
产生；分娩 轮到某人；接着 感到高兴；感到振奋 突发；爆发
密切注意；当心；提防挡住(光线)
离??很远；根本不是既然 联想拓展
小说家 接待员 旅行者，观光者 记者，新闻工作者
短语串记 1．reach out for 2．try out for 3．make up for
－－－－－－－－－－－ 4．in time 5．in no time 6．at a time 7．at one time 8．at times
－－－－－－－－－－－ 9．break up 10．break down 11．break into 12．break in 13．break through －－－－－－－－－－－ 14．in turn 15．by turns
16．take turns to do sth. 17．It's one's turn to do sth. －－－－－－－－－－－ 18．to begin with 19．to conclude 20．to sum up
首先 最后 总之 经典例句
①The cashiers were asked to watch out for forged banknotes.出纳员接到要求，要注意伪钞。
metre squad. 他本该参加奥②He should have tried out for the Olympic 100-运会百米赛跑的选拔。
依次；轮流；反过来 轮流；交替地 轮流做某事 轮到某人做某事 打碎；拆散；分裂 坏掉；破裂；崩溃 破门而入；突然??起来 破门而入；打断 突破 及时；终于 立刻；马上 每次；一次 曾经；一度 有时候；不时地 伸手去拿 参加??选拔 补偿；弥补
③Her enthusiasm makes up for her lack of experience.她的热情弥补了她经验的不足。
④We had to go and see the principal one at a time.我们得逐一去见校长。 ⑤I was in a nightclub in Brixton and a fight broke out. 当时我在布里克斯顿的一家夜总会里，那里发生了一场斗殴。
⑥Negotiations between the two sides have broken down.双方谈判失败了。 ⑦As the President's car drew up，the crowd broke into loud applause.总统的座驾停下时，人群中爆发出热烈的掌声。
⑧The children called out their names in turn.孩子们逐一自报姓名。
词汇异空间——派生词汇
原词 system n． exist vi. theory n． religion n． gentle adj. violent adj. 词义 派生词 词义 1.系统的；有条理的 2.存在；生存 系统；体系；制度 systematic adj. 存在；生存 学说；理论 宗教；宗教信仰 温和的；文雅的 猛烈的；激烈的；强暴的 existence n. theoretical adj. 3.理论上的 religious adj. gently adv. violence n． harmful adj. harmless adj. 4.宗教的；虔诚的 5.温柔地；温和地 6.暴力；暴力行为 7.有害的 8．无害的 harm n．& vt. 伤害；损害；危害 Ⅰ.[原创]语境填空(用所给词的适当形式填空) The 1.existence (exist) of terrorism lets the world not be stable.Terrorist activities，many of which are linked to 2.religious (religion) extremism，have resulted in a global disaster.They not only bring threat to the safety of humans but have 3.harmful (harm) effect on economic growth.Many people are forced to flee their