高中英语知识讲解 Unit4 Astronomy 语言点
知识点Unit4 Astronomy汇总
知识点Unit4 Astronomy：1. system n.[c] 系统；体系；制度；方法[典例]1). The solar system includes the sun and its eight planets.太阳系包括太阳和它的八颗行星。
2) The housing problems is one of the main problems in our life. So the present system of housing needs to be improved.1). The ______ ______ (教育系统) operates very differently in the US and China.2). He introduced us a well-designed ______ ______ (铁路系统).Keys: 1). educational system / the system of education2). railway system2.circle1).名词n. [C]圆;圆圈;圆形的东西,环状物The students sit in a circle on the floor. 学生们在地板上坐成一圈。
2). There is a circle of flowers around the statue. 塑像周围鲜花环绕。
vt.画圆圈;圈出;围着Circle the correct answersvi.盘旋,旋转;环行Birds were circling overhead. 鸟儿在头顶上盘旋飞翔。
3. as 连词1)"当......时候", She sang a song as she walked.2)"因为"由于",引原状从，与because相近。
I must stop writing, as I have a lot of work to do. As you were out,I left a message.3) "正如"、"按照""像......一样"Run as l do. Leave the paper as they are.4) 随着As she grew older,she gained in confidence.As time goes by,……5) 表"尽管"、"虽然",常用于倒装句式,引让步状从。
高中英语 Unit 4 Astronomy the science of the stars 语言要
单元要点预览（旨在让同学整体了解本单元要点）语言要点（模块）Ⅱ.词性变化（旨在提供语法填空所需材料）Ⅲ.重点词汇（旨在提供词汇综合运用材料）1. system n.[c] 系统；体系；制度；方法 systematic adj 有系统的; 有条理的[典例]1). The solar system includes the sun and its eight planets. 太阳系包括太阳和它的八颗行星。
2). Alcohol is bad for your system. 喝酒对身体有害。
[练习] 根据句子的意思完成句子。
1). The ______ ______ (教育系统) operates very differently in the US and China.2). He introduced us a well-designed ______ ______ (铁路系统).Keys: 1). educational system 2). railway system2. lay vt. (laid, laid, laying) 把放下；摆设；铺(地毯) ；产(蛋)[典例]1). He laid his hand on my shoulder. 他把手放在我的肩上。
2). Who should we lay the blame on? 我们该责备谁?[重点用法] lay短语：lay eggs 下蛋lay sth. aside 把某物放在一边；积蓄（钱）lay sth. down 把某物放下lay the blame on sb.责备某人lay the table 摆桌子lay emphasis / stress on sth. 把重点放在某事上[练习] 根据句子的意思在括号里填入适当的词或翻译。
1). The bird ______ its eggs in other birds’ nests.2). He is a political leader that _____ _____ _____ _____ (非常强调) individual responsibility.3). He ______ some money ______ for rainy days.Keys: 1). lays 2). lays great stress on 3). lays/puts; aside3. harmful adj. 有害的；伤害的 harm n.&vt. 伤害（某人）[典例]Many people are aware of the harmful effects of smoking. 很多人都意识到吸烟的危害。
【句型讲解】Unit4Astronomy重点句式精讲
【句型讲解】Unit 4 Astronomy重点句式精讲1.It exploded loudly with fire and rock, which were in time to produce the water vapour, carbondioxide, oxygen, nitrogen and other gases, which were to make the earth’s atmosphere.它（地球）巨大的爆炸喷出了烈火与岩石，最终产生了水蒸气、二氧化碳、氧、氮和其他多种气体，从而形成了地球的大气层。
“be+不定式”结构通常用来表示“按计划或安排要做的事情”，或表示上级对下级、父母对子女“下命令”The train is to arrive in Beijing at 10:25 am.这趟火车将于上午10：25到达北京。
You are to eat all your supper before you watch TV.你得吃完晚饭才能看电视。
Here is a message for you from your head teacher; you are to go to her office after class.你的班主任给你一个口信，要你下课后到她的办公室去。
2．That made it possible for life to begin to develop.那使生命的生长发育成为一种可能。
此句中的made后跟带形式宾it的复合结构，其中it是形式宾语，真正宾语是不定式复合结构“for life to begin to develop”.宾语补足语是possible。
She made it her business to find out who was responsible.她非要弄清楚是谁的责任不可。
【提示】常用于此结构的动词还有think, feel, find, consider等。
人教版高中英语必修三Unit4Astronomy：thescienceofthestars课文知识点解析
Unit 4 Astronomy：the science of the stars 课文知识点解析Warming UpDiscuss in pairs which science subjects are part of medicine,biochemistry,geophysics or astronomy.分组讨论哪些科学科目是医学，生物化学，地理学或天文学的一部分。
in pairs=two at a time=in twos一次两个，两个一组e.g.Shoes and slippers are sold in pairs.鞋子都是论双卖的。
注意：in+数词/名词（数词/名词以复数形式）e.g.in threes and fours 三三两两的in groups 成群的思维拓展in在这里表示：以……数量/形式、形状等。
e.g.Tourists queue in thousands to see the tomb. 游客数以千计排着队看陵墓。
Reading1.The problem was that the earth became violent because it was not clearwhether the solid shape was to last or not.这一问题变得越来越不确定，因为这一球体形状是否能够维持尚未明朗。
(1)violent adj. 猛烈的；激烈的；强暴的a violent language 激烈的语言a violent storm 猛烈的风暴a violent 猛攻思维拓展violence n.［U］1.暴力，强暴2.猛烈，剧烈，强烈(2)whether...or not... “是……还是……”在这里是主语从句,它还可以引导宾语从句、表语从句、同位语从句和状语从句。
e.g.I don’t know whether he will agree with me.（宾语）我不知道他是否同意我的观点。
Book3 Unit4Astronomy知识点
Unit 4 Astronomy: the science of the stars Language pointsDesigned by Liu Zhenhai1 .think about 思考考虑2.solar adj. 太阳的阳历lunar adj. 阴历的3. system n.①(c) 制度体制a system of government 政体②（c）办法方式I prefer this system of teaching English.③（u）条理规律His father works with system.④体系系统 a system of law4.circle n. (c)①圆圈环状物The students sit in a circle on the floor.②循环周期 a vicious circle③（天体运行的）轨道Vt. ①画圆圈圈出Circle the correct answer.②环绕。
移动（运转）vi.盘旋环形Birds were circling overhead.5. match n.(c) ①比赛竞赛Our side beat the other in the match.②对手③火柴 strike a match④婚姻⑤相似之物相配之物The chairs and the desk are a good match.Vt.敌得过比得上No one can match Tom.6. astronomy 天文学7. religion n.①（u）宗教宗教信仰②（c）宗教团体1.as 引导状语从句时间状语从句“一边…一边”I read the letter as I walked along the river.方式状语从句Do in Rome as the Romans do.入乡随俗原因状语从句As it rained, I stayed at home.让步状语从句Young as he is, he knows a lot. 部分倒装n/adj/adv/do + as + 其他部分Child as he is, he knows much..Try as we did, we failed again.2.according to 根据…按照…依照…According to the TV, it will be fine tomorrow.I will do it according to your instructions.3.theory n.① (c)学说理论 the theory of evolution 进化论②推测看法My theory is that we will have a cold winter this year。
高一英语B3U4 Astronomy语言归纳 新课标 人教版
高一英语B3U4 Astronomy语言归纳新课标人教版第一章重点词汇第一节动词The dust began to slowly combine into a ball moving around the sun. (B3U4天文)As the earth cooled down, water began to appear on its surface.(B3U4天文)That made it possible for life to begin to develop. (B3U4天文) These plants multiplied and filled the first oceans and seas with oxygen. This encouraged the development of early shellfish and a ll sorts of fish. (B3U4天文)It seemed as if the dust would multiply and become a new planet . (B3U4天文)As the rocket rose slowly into the air we began to feel the pu ll of the earth (B3U4天文)When we got there, I wanted to explore immediately. (B3U4天文)I wonder why the universe exists. (B3U4天文)The discoveries have revolutionized the way we think. (B3U4天文) 第二节动词或名词第三节名词Carbon dioxide, oxygen, nitrogen and other gases were to make the earth’s atmosphere. (B3U4天文)The earth was different because of the arrival of small plants g rowing in the water on its surface(B3U4天文)第四节形容词a cloud of energetic dust (B3U4天文)It allowed the earth to dissolve harmful gases into oceans and s eas. (B3U4天文)Last month I was lucky enough to have a chance to make a trip into space (B3U4天文)Our image of the universe today is full of strange sounding idea s, and remarkable truths. (B3U4天文)And our galaxy in a universe that is infinite and expanding (B 3U4天文)第五节副词Gradually the weight lessened and I was able to talk to him. (B 3U4天文)The spaceship moved sideways from the “black hole. (B3U4天文)第二章短语搭配第一节动词性I. Be动词短语We were caught by the gravity of a “black hole”.(B3U4天文) Then we were off. (B3U4天文)II. 动词+名词Reptiles produced young generally by laying eggs. (B3U4天文)Some huge animals developed. They laid eggs too. (B3U4天文)Man developed new methods of growing food, hunting and moving aro und. (B3U4天文)The surface of the moon produced a lot of dust. (B3U4天文)The spaceship began to increase its speed (B3U4天文)Scientist spends two years training to mend the space telescope ( B3U4天文)So he was trained to do repairs on spaceships and telescopes. (B 3U4天文)After a while I got the hang of it and we began to enjoy ours elves. (B3U4天文)III. 动词+名词+介词Taking carbon dioxide from the atmosphere and filling the air wit h oxygen helped life to develop. (B3U4天文)Human beings are not taking care of the earth very well. (B3U4天文)Carbon dioxide prevents heat from escaping from the earth into sp ace. (B3U4天文)The spaceship warned me to be ready as we were approaching the “black hole”.(B3U4天文)I tried to make sense of what I see. (B3U4天文)We hope to have a complete picture of the universe we live in.(B3U4天文)IV. 动词+介词/副/形+名词Small clever animals appeared and spread all over the earth. (B3U 4天文)Whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved. (B3U4天文)At last we slowed almost to a stop and we were able to look a round us. (B3U4天文)He explained to me that the force of gravity would change three times on our journey (B3U4天文)The story of how we arrive at this picture is the story of learning to understand what we see. (B3U4天文)V. 动词词组I cheered up immediately and (B3U4天文)Just then the lights on our spaceship went out (B3U4天文)第二节名词性I. 名词词串Many millions of years later the first green plants began to app ear on land. They became the most important animals on the earth for millions of years. (B3U4天文)Whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved. (B3U4天文)A visit to the moon (B3U4天文)In less than a hundred years, we have found a new way to think of ourselves. (B3U4天文)I have tired to find scientific answers to them. (B3U4天文)II. 介词+名词搭配The earth exploded loudly with fire and rock, which in time to produce the water vapour. (B3U4天文)When the plants grew into forests, reptiles appeared for the firs t time. (B3U4天文)We watched in shock and amazement as a large sun suddenly disapp eared into the hole. (B3U4天文)The answers have always seemed well beyond our reach until now. (B3U4天文)III. 复合介词或副词Amphibians were able to live on and as well as in the sea. (B3 U4天文)Mammals produced their young from within their bodies. (B3U4天文)第三章常见句型第一节基本结构Walking does need a bit of practice now that gravity has changed . (B3U4天文)When I tried to step forward I found I was carried twice as fa r as on the earth and fell over. (B3U4天文)The gravity of the moon is not as strong a pull as the eart h's. (B3U4天文)Leaving the moon's gravity was not as painful as leaving the earth's. (B3U4天文)The earth may become too hot for the lives on it. (B3U4天文) We are too far from the earth now to feel its pull, so we feel as if there is no gravity at all. (B3U4天文)第二节其他句式As time went by they covered the earth. (B3U4天文)Why is the universe the way it is? (B3U4天文)第三节上佳表达He did a good job and the telescope works fine. (B3U4天文)第四章知识点滴第一节高频知识一、形容词特殊用法My mouth went dry and I closed my eyes. (B3U4天文)二、情感形容词的用法He was very disappointed. (B3U4天文)But returning to the earth was very frightening. (B3U4天文)We watched, amazed as fire broke out on the outside of the spac eship as the earth's gravity increased. (B3U4天文)“That was very exhausting but very exciting too," I exclaimed. ( B3U4天文)What it was to become was a mystery (B3U4天文)This is how the earth began to show its special qualities (B3U4天文).The problem was that the earth became violent. (B3U4天文)What scientists think is that the earth was different because of the arrival of small plants growing in the water on its surfac e. (B3U4天文)It was not clear whether the solid shape was to last or not. ( B3U4天文)The pull of the earth is what we call gravity. (B3U4天文)What scientists think is that the earth was different because of the arrival of small plants growing in the water on its surfac e. (B3U4天文)The earth is different from other planets going round the sun. ( B3U4天文)There seemed to be a large circle of lights going round an empty space. (B3U4天文)That empty hole is like a mouth always needing to be fed. (B3U4天文)The lights are large stars being slowly sucked into it. (B3U4天文) Huge questions remain to be answered (B3U4天文)One evening he saw a huge comet explode as it hit the moon. (B3U4天文)He was lucky enough to be chosen to repair the Hubble space tel escope. (B3U4天文)When we get closer to the moon, we shall feel its gravity pulli ng us. (B3U4天文)I floated weightlessly around in our spaceship cabin watching theearth become smaller and the moon larger. (B3U4天文)We now find ourselves moving around an average-sized sun (B3U4天文)第二节零散知识We had discovered something new about “black holes”.(B3U4天文)。
Book 3 Unit 4 Astronomy语言知识点
一、重点单词1.harmful:adj有害的be harmful to sb/sth对某人/某物有害harm:vt/n伤害harm sb/sth伤害......do/cause sb harm=do/cause harm to sb对某人有害There is no harm in doing sth.做某事没有坏处It does no harm to do sth. 做某事没有坏处2.exist:vi存在sth exist存在......There exists...存在，某地有exist in...存在于.......之中 exist on...靠......为生existence:n存在，生存come into existence: vi产生，成立，开始存在bring...into existence使产生使存在3.puzzle:vt使迷惑，使为难sbvi对......苦苦思索，冥想苦思puzzle about/overn谜，难题，猜谜，迷惑，困惑的事情a puzzle to sb一件让某人感到困惑的事情 a word puzzle字谜 in a puzzle迷惑地，困惑地puzzled:adj迷惑不解的，困惑的be puzzled about/by...对......感到困惑puzzling:adj令人迷惑的，令人困惑的5.fundamental:adj根本的，基本的，必不可少的，基础的be fundamental to...是......的基础a fundamental skill基本的技能6.pull:v拉，拖 n牵引力pull down拆毁，摧毁pull in（车辆）进站停靠，靠边停靠pull out驶出，拉出，拔出pull through康复，痊愈pull up（使）停住pull away后退pull over将车辆在路边停住pull into进站7.unlike:prep不像 like:prep像like:v喜欢 dislike:v不喜欢likely:adj可能的 unlikely:adj.不可能 sb/sth be likely to do sth It is likely that...alke:adj相像的1.gentle gently; exhaust sb exhausting exhausted二、重点短语1.in time及时，迟早，终于，总有一天，最终in time for... in time to do sthon time按时In no time立刻，马上at no time决不at a time一次，每次at one time曾经，一度（过去式）at the same time同时from time to time有时，偶尔take one’s time别着急，慢慢来to do sthkill time消磨时间at times有时from time to time有时2.in one’s turn轮到某人，接着in turn依次，轮流，反之，反过来by turns轮流，交替地take turns to do sth， take turns in doing sth轮流做某事It’s one’s turn to do sth轮到某人做某事turn on/off/up/down/out/in/around/overturn up出现，调大，向上翻turn down拒绝，减小turn in上交，归还，告发turn out结果是，关掉turn over移交给，翻转，翻身，翻过turn on打开turn off关掉turn to转向，求助于，致力于，翻到，查阅turn back往回走，翻回到turn against转而反对turnover营业额，流通量3.cheer up（使）高兴，（使）振奋，感到高兴，感到振奋cheer up cheer sb upcheer sb on以喝彩声鼓励，为某人加油cheer for为......而欢呼cheers!干杯！y eggs下蛋lay sb off解雇lay sth down放下，制定lay aside储蓄，留存，把.....搁置一边lay out布置，设计，安排lay emphasis on强调lie down躺下 lie in在于，位于5.prevent...from... stop/protect/defend/keep/preserve...from...6.block out挡住（光线） block off封闭，封锁7.because since as now that (in) that for+句子because of as a result of on account of due to thanks to owing to+n/pron/doing sth8.watch out for密切注意，当心 watch out当心watch over照顾，监督 be under a close watch9.break out/up/in/through/off/down/away frombreak up:打碎，分裂country，marriage破裂，解散，结束，分手with sb，散开break down:出故障，（讨论，关系）失败，垮掉，分解，瘫痪（系统）;失控痛苦，破除（障碍，偏见等）break in:破门而入（vi）打断（谈话）break into:破门而入(vt)突然起来break out:爆发，发生（vi）break away from脱离，摆脱break off折断，脱落，突然停止，终止（关系），暂停break through突破三、重点句型1.倍数表达法A is three times 比较级 than Bas + 原级 as Bthe +度量词 of Bwhat + B isthat of B2.一般将来时：will do:单纯的将来事实be going to do sth:打算和预测be to do sth:计划或安排即将发生的动作，也可表示命令，禁止，义务或可能性be about to do:即将，经常搭配when连用be doing:按计划或安排要发生的事情，do表示来去之类的趋向性动词does:按规定或时间表预计要发生的事3.make/find/think/feel/consider it + adj/n to do sth四、补充1.explain to sb sth/that...Explain sth to sb.Explanation:n.2.space翻译成太空，是零冠词3.be amazed/surprised by/at sthbe amazed to do sth/that...。
高中英语 Unit 4 Astronomythe science of the stars单元重点小
第4页
重点单词 重点短语 重点句型 重点语法 交际功效
1.地球(开始)变得如此激烈动荡以至不知道这种形状是否会继续存
在下去。
The h became
so violent that
it was not clear
whether the shape would last or not.
2.这就产生了一系列反应,使得生命有可能开始发展了。
第7页
重点单词 重点短语 重点句型 重点语法 交际功效
指示(Instructions) Please pay attention to ... Please check that ... Please look at ... Make sure that ... Don’t forget to ... Watch out for ... You need ... You’d better ... You must/mustn’t ...
1.及时;终于
in time
2.下蛋
lay eggs
3.产生;分娩 give birth to
4.轮到某人
in one’s turn
5.阻止;阻止
prevent ...from
6.感到高兴;感到振奋
cheer up
7.既然
now that
8.突发;暴发
break out
9.亲密注意;当心;提防 watch out for
第8页
4. unlike
prep.与……不一样;不像→ like
(反义
词) prep.→ dislike
v.&n.不喜欢
5. harmful adj.有害→
harm n.坏处 vt.对……有害
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Unit 4 Astronomy 语言点目标认知重点词汇：explode，escape，depend，encourage，violent，presence，allow，lay，exist，remain，prevent，force，pull，cheer，exhaust，warn，possible，puzzle重点短语：in one’s turn，in time，a bit of，break out，now that，watch out for重点句型：“be to+动词原形”的用法it作形式宾语whether的用法知识讲解重点词汇【高清课堂：403623 Astronomy 探秘天文学精讲词汇】explode【原句回放】It exploded loudly with fire and rock.【点拨】explode (v.) 爆炸，爆发(1) explode with anger勃然大怒explode into laughter放声大笑the exploding world population迅速增长的世界人口(2) explosion (n.)爆炸explosive (adj.) 易爆的(n.) 爆炸物；炸药；迸发(感情)；(人口等)突增完成句子(1)Two bombs ________ (爆炸) in front of the park gate，causing two deaths.(2)Suddenly Charles _______________________ (勃然大怒)．(3)There will be no standing room on the earth _______________________________________ (由于激增的世界人口)．Keys: (1) exploded (2) exploded with anger (3) exploding world populationescape【原句回放】They are putting too much carbon dioxide into the atmosphere, which prevent heat from escaping from the earth into space.【点拨】escape v. 逃跑，逃避n. 逃脱常用结构：escape from... 从……逃走escape sth. 逃避某事escape doing sth. (不能接to do形式)逃避做某事sth. escape sb./sb.’s attention/sb.’s notice某物没引起某人的注意；某人没记住某物翻译句子(1)这个男孩逃过了处罚，真幸运。
____________________________________________________________(2)我想不起这个单词。
____________________________________(3)四个罪犯从监狱中逃出来了。
____________________________________Keys：(1) The boy was lucky enough to escape being punished.(2) The word escapes me.(3) Four criminals escaped from prison.depend【原句回放】Whether life will continue on the earth for millions of years to e will depend on whether this problem can be solved. 在未来的几百万年里，生命在地球上是否会持续将取决于这个问题是否能够解决。
【点拨】depend (v.) 依靠，依赖常用搭配：depend on/upon sb./sth./v.ing 依赖，依靠，信赖depend on sb. to do sth. 依靠/相信某人做某事depend on sb./sth. for sth. 靠某人供给某物depend on sth./wh- 视……而定，取决于……depend on it（常用于句首或句末）请放心，没问题It/That (all) depends. 那得看情况而定。
Children depend on their parents for food and clothing.小孩依赖他们的父母供给衣食。
It all depends on whether she likes the boss or not.一切都取决于她喜欢还是不喜欢这个老板。
(2016 浙江高考) The effects of gossip vary depending on the situation.谣言的影响随着情况的不同而不一样。
【拓展】depend on的同义短语：count on=rely on sb. 信任/相信/依赖/依靠believe sb.相信某人(所说的话)believe in sb.相信/信任/信赖某人trust (in) sb.相信/信任/信赖某人encourage【原句回放】They multiplied and filled the oceans and seas with oxygen，which encouraged the later development of early shellfish and all sorts of fish．(P26)它们繁殖起来就使得海洋充满了氧气，这为早期的贝类及其他各种鱼类的发育进一步创造了条件。
【点拨】encourage vt.鼓励，鼓舞；激励，促进常用搭配：encourage sb. to do sth．鼓励某人做某事High prices encouraged farming．高价格刺激了农业。
I encouraged her to work hard and to try for the examination.我鼓励她用功并为这次考试做努力。
(2015 福建高考) Surround yourself with people who uplift, encourage and understand you!让你自己处于那些使你向上的、鼓励你的、理解你的人之中。
【拓展】encouraging adj.令人鼓舞的encouragement n.鼓舞，鼓励courage n.勇气discourage vt.使泄气discouraging adj.令人泄气的，令人沮丧的discourage sb. from doing阻止某人做……violent【原句回放】The earth became so violent that it was not clear whether the shape would last or not．(P25)地球(开始)变得激烈动荡，不知道这个固体形状是否会继续存在下去。
【点拨】violent adj.①剧烈的，猛烈的，使用暴力的a violent attack猛烈的攻击He gave the man a violent blow．他给了那个人猛烈的一击。
②(人)暴力的，粗暴的He was violent when he got drunk．他喝醉后很粗暴。
【拓展】violence n.暴力，猛烈violently adv.激烈地，粗暴地presence【原句回放】What many scientists believe is that the continued presence of water allowed the earth to dissolve harmful gases and acids into the oceans and seas．(P26)很多科学家相信，由于地球上长期有水存在，它使得地球把有害气体和酸性物质溶解在海洋里。
【点拨】presence n．存在；出席，在场常用结构in the presence of sb.＝in sb’s presence当着某人的面；有某人在场presence of mind危难中镇定自若；遇事不慌lose one’s presence of mind心慌意乱Your presence is requested．敬请光临。
She asked them not to discuss the matter in her presence．她请求他们不要当着她的面讨论这个问题。
【拓展】present adj.出席的，在场的；现在的，当前的absence n.缺席，不在场absent adj.缺席的，不在场的absent-minded adj．心不在焉的be absent from school / work / a meeting不上学/上班/到会allow【原句回放】What many scientists believe is that the continued presence of water allowed the earth to dissolve harmful gases and acids into the oceans and seas．(P26)很多科学家相信，由于地球上长期有水存在，它使得地球把有害气体和酸性物质溶解在海洋里。
【点拨】allow v.允许，许可doing sth. 允许做某事allow + sb. to do sth. 允许某人做某事allow sb. sth. 允许某人某事My boss doesn’t allow me to use the telephone．我的老板不允许我使用电话。
Passengers are not allowed to smoke．乘客不得吸烟。
We d on’t allow smoking in our house．我们不允许有人在我们家里吸烟。
Their teacher allowed them three days for the assignment．他们的老师给他们三天时间完成作业。
lay【原句回放】They produced young generally by laying eggs．(P26)它们一般是通过孵蛋而繁衍后代的。
【点拨】lay v.下蛋，放置lay the book on the table把书放在桌上The hens are not laying well．现在那些母鸡不爱下蛋。
【拓展】lay的相关短语：lay off(暂时)解雇lay out展开；布局，安排lay down放下lay aside把……放一边lay sth. up储备某物lay sth. on供应某物易混辨析exist【原句回放】They laid eggs too and existed on the earth for more than 140 million years．(P26)它们也生蛋，在地球上生存了1.4亿多年。