1、必修 3 Unit 4 Astronomy: the science of the stars要 点 梳 理 高效梳理知识备考重点单词1astronomy n天文学 astronomer n天文学家2system n系统；体系；制度3theory n学说；理论theoretical adj.理论上的4globe n球体；地球仪；地球global adj.全球性的；全世界的5violent adj.猛烈的；激烈的；强暴的violence n暴力violently adv.猛烈地6atmosphere n大气层；气氛7unlike prep.不同；不像dislike vt.不喜欢8presence
2、 n出席；到场；存在present adj. & n. & v在场的；目前，现在；出席；颁发，授予9harmful adj.有害的；伤害的 harm n危害，害处 harmless adj.无害的10exist vi.存在，生存 existence n存在，生存11puzzle n谜；难题 vt. & vi.(使) 迷惑；(使 )为难 puzzled adj.迷惑的puzzling adj.令人迷惑的12gravity n万有引力；重力13satellite n 卫星；人造卫星14climate n 气候15spaceship n宇宙飞船16pull n. & vt.拉( 力)；拖；牵引力17
3、float vi. & vt.(使) 浮动； (使) 漂浮 n漂浮物18mass n质量；团；块；大量；(复)群众重点短语1in time 及时；终于2lay eggs 下蛋3give birth to 产生；分娩4in ones turn 轮到某人；接着5prevent. from 阻止；制止6block out 挡住(光线 )7cheer up 感到高兴；感到振奋8now that 既然9break out 突发；爆发10watch out 密切注视；当心；提防11cool down 冷却12as well as 也；还有13depend on 依靠；依赖，取决于14get close t
4、o 靠近重点句型1This produced a chain reaction, which made it possible for life to develop.这就形成一个连锁反应，使生命发展成为可能。2But 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，我发觉我被送出很远，步子的跨度竟是在地球上的两倍，因而我摔倒了。3.walking does need a bit of practice now that gravi
5、ty has changed.既然重力改变了，行走的确需要一些练习。高考范文(2009陕西卷)假定你是李华。在一个英文网络论坛上，你看到一个名叫 Grownup 的中学生发帖(post)寻求帮助，请根据帖子内容、写作要点和要求回贴。Grownup Post at 1852009 20：08Hi, everyone，Im 17 years old and I am going to university this autumn. But my mother continues to treat me as a sevenyearold. What should I do?TOPLast Topi
6、c Next Topic REPLY NEW写作要点：1告诉 Grownup 要理解母亲；2给 Grownup 提出解决问题的具体建议。要求：1.短文需写在答题卡的指定区域。2.短文词数不少于 80(不含已写好的部分)。3.内容充实，结构完整，语意连贯。4.书写须清晰、工整。Hi, Grownup，As a student of your age, I understand your situation._范文Hi，Grownup，As a student of your age, I understand your situation. The problem you are facing
7、is common among our teenagers. However, it should be wise not to do anything that may hurt her feelings. Here are a few suggestions.First, its advisable to talk more with your mom. I learnt talks help you understand each other better. They are also opportunities to let her know your ideas of and att
8、itudes toward many things.Second, you should learn to do your own things well, proving to your mom that you are already a “grownup” ， Its even better if you could share more of the housework, such as cleaning, washing and cooking.考 点 探 究互动探究能力备考.词汇短语过关1harmful adj. 有害的；伤害的harm n&vt. 损伤；伤害harmless ad
9、j. 无害的harmlessness n. 无害be harmful to 对有害do sb. harm/do harm to sb. 对某人有害do more harm than good 弊大于利There is (no) harm in (sb.s) doing sth.(某人)做某事有 (无)害处。It does (no) harm (for sb.) to do sth. (对于某人来说)做某事有(无)害处。mean no harm 没有恶意即学即练 1(1)Fruit juice can _ _ _ childrens teeth.果汁可能损坏儿童的牙齿。(2)What he did _ his reputation.他所做的损害了他的名声。beharmfultoharmed(3)He may look fierce, but he _ _ _.他可能看上去很凶，但并无恶意。(4)The court case will _ _ _ _ my business.这起诉讼案件将严重损害我的生意。meansnoharmdo seriousharmto2exist vi. 存在；生存；维持生活
