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1、Unit4 Astronomy：the science of the stars词汇篇_要求学生掌握本单元的重点单词、重点短语、重要词汇辨析并能熟练应用。一、 重点短语1.in time 及时；终于2. lay eggs下蛋3. give birth to 产生；分娩4. in ones turn 轮到某人；接着5. prevent. from 阻止；制止6. block out 挡住（光线）7. cheer up 感到高兴,感到振奋8. now that 既然；因为9. break out 突发；爆发10. watch out密切注视,当心二、 词义辨析1. collide属正式用词，常与不
2、及物动词，可与with搭配，其名词为collisioncrash属普通用词，可作名词、及物动词和不及物动词，作不及物动词时常与介词into搭配2. break out指灾难性的事件，如战争、火灾、疾病等的爆发happen强调事件发生的偶然性come about常指不受控制的事情的发生，相当于。常用句型：How does/did it come about? 是怎样发生的？3.lie, lie , lay 的区别如下:动词形式第三人称单数过去式过去分词现在分词中文释义lieliesliedliedlying撒谎；谎话lielieslaylainlying躺；位于laylayslaidlaidla
3、ying放置；下蛋三、要点梳理1. in time及时；终于；迟早；最后on time准时；按时in no time 立即；马上at a time依次；每次；逐一at one time曾经；一度at no time从不at the same time同时in time for刚好赶上2.atmosphere(n.)大气层；空气；气氛atmosphere作为“大气层、大气”讲时常与定冠词the搭配；作“气氛、氛围”讲时常与不定冠词搭配；作先行词时，其后的定语从句如果缺少状语，引导词用where，如果缺少宾语或主语用that或which。3. harmful (adj.)有害的harmless (
4、adj.)无害的harm (n.)伤害，损害 ssful(adj.)2222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222 be harmful to=do harm to对有害 do more harm than good弊大于利 There is no harm in doing sth. =It does no harm to do sth.不妨做某事；做某事没坏处 mean no harm无恶意4. vt.+it
5、+adj./n.+(for sb./sth.) to do sth.在这个句型中，形容词或名词作宾语补足语，it是形式宾语，真正的宾语是后面的不定式短语，也可以是动名词短语或that从句。可用于该句型的动词通常有make，think，consider， find ，feel， judge等 E.g. I dont think it worthwhile going to such a place.到这样一个地方去，我看是不值得的。5. multiply (v.)乘以；乘；迅速增加；（使）繁殖 multi-为一前缀形式，意为“多个，许多”常构成名词和形容词multicultural (adj.)
6、多元文化的multimedia (adj.)多媒体的；使用媒体的(n.)多媒体multinational (adj.)跨国的；涉及多国的multiparty (adj.)多党派的6. exist (vi.)存在；生存 existence (n.)存在，生存existon 靠生存，生活in existence现存；现有come into existence出现；开始存在7. thus (adv.)这样；以此方式；因此；从而“thus+分词短语”常置于句末作结果状语，翻译时常用“因而”、“所以”、“于是”、“便”等词语。这种分词短语的逻辑主语不是句子的主语，通常是前面的整个句子，因而它的作用相当于
7、一个非限制性定语从句。E.g. Some new machines were installed in our factory, thus resulting in an increase in production.我们的工厂安装了一些新机器，因而增加了产量。8. in ones turn轮到某人；接着in turn依次，轮流；相应地；转而 take turns in doing /to do sth.轮流做某事on the turn即将变化 give sb. a turn使大吃一惊 the turn of the century世纪之交E.g. When it was in my turn
8、, I was too excited to speak.当轮到我时，我激动得都说不出话来了。9. prevent/stop sb. (from) doing sth. 阻止某人做某事(在主动句中from可以省略，被动句中不可省略)keep sb. from doing sth.（from不可省略） protect from 保护免遭10. puzzle(vt.)&(vi.)（使）迷惑；（使）为难；(n.)难题；谜 puzzle over/over sth.苦苦思索，仔细琢磨 be puzzled about /as to对感到迷惑a puzzled look/expression迷惑的表情a
9、 crossword puzzle纵横字谜puzzled (adj.)（感到）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11.crash(vi.)&(vt.)碰撞；坠落 air crash飞机失事crash into撞在上12. block out挡住；遮住（光线或声音）；忘掉；抹去（不愉快的事情） block in画（某物）的草图block off封锁，封闭（道路）block up塞住，封住（孔，洞）block ones way挡住某人的去路13.pull(n.)&(vt.)拉（力）；拖；牵引力pull back撤退pull ahead抢先；领先pu
10、ll in（车）进站停靠pull out驶离车站pull over把（车）开到路边pull up使车停止，停下pull down 拆毁，拆掉（建筑物）pull through（使）恢复健康14. cheer up感到高兴；感到振奋 cheerful (adj.)快乐的，高兴的 cheers（用于祝酒）干杯cheer sb. on为某人加油；鼓劲 give a cheer欢呼起来15. 倍数表达法倍数表达方式：“A +be+倍数+as+形容词或副词的原级+as +B”表示“A是B的多少倍”“A +be+倍数+as+形容词或副词的比较级+than +B”表示“A比B大多少倍”“A +be+倍数+t
11、he size/height/length/width,etc.+of +B”，表示“A是B的大小/高度/长度/宽度等多少倍”16.now that既然常见的表示原因的连词：in that因为，原因是seeing that由于，因为17. break out（战争、火灾、疾病等）突发；爆发 break away (from)脱离；突然挣脱 break through突围，突破；克服break sth. up拆开；打散；结束（关系等）break in强行进入break into强行闯入；突然开始break off断开；中断break down出故障；垮掉18. watch out for当心；提
12、防；密切注意 watch out=look out当心，小心watch out for=look out for当心、提防 Watch it! 小心！留神！watch over sb./sth.照管某物/照顾某人 keep watch守护，监视 on watch值班watch the clock盯着钟表watch the time注意时间watch the world go by闲看人来人往19. depend on sb =rely on / count on sb./believe in sb./trust (in) sb. 信任/依赖某人It (all) depends 看情况而定20.
13、 与get相关的短语:get along 相处融洽, 进展等get down to 开始认真对待, 考虑get on 上车get through 到达; 通过; 办完, get to 到达1.（2014河北衡水中学调研）The hotel is always full of people because it offers a lovely relaxed_ and personal service.A. appearanceB. adventureC. amountD.atmosphere2.(2014山西康杰中学月考)Nobody was clear about how exactly h
14、e had managed to_such a large amount of money in such a short time.A. increaseB. accumulateC.multiplyD.commit3.(2014安徽)My good performance in the job interview left me _ about my future and about what I can do here.A. puzzledB. sensitiveC.optimisticD. embarrassed4.(2014江苏无锡月考)Mr. Browns condition looks very serious and it is doubtful if he will_.A. pull backB.pull upC.pull throughD.pull out5.(2014安徽)-I get at least half an hour of exercise almost every day.-Oh great! _.A
