人教版英语必修三Unit2全(单词详解)PPT课件

1、Unit 2Words and expressions12021/7/241.diet. N.日常饮食。V.节食 教材原句：Everybody has to eat,but do you eat a heathy diet? go/be on a diet:节食 eg:Mary thinks she is so fat that she has to go on a diet. diet 指通常吃的食物，尤其指规定的食谱（治疗疾病或减轻体重的食物） food:指人或动物所需食物或植物所需养料。 eg:we cannot suevive without food and water.22021/

2、7/24 2.balance n天平；平衡；结余，余额 v.平衡；权衡 You ought to have a balanced state of mind. You have to balance the advantages of living in the countryside against the disadvantages. 你得权衡一下住在乡下的好处和坏处。 keep ones balance保持平衡 in the balance lose ones balance失去平衡 keep.in balance please keep a balance between work a

3、nd play. I cant keep my balance.=I lost my balance.=out of. Try to balance your diet by eating fruit. balanced adj.保持(或显示)平衡的 What will happen to you if you dont eat a balanced diet? 假如你的饮食不均衡会怎么样？32021/7/24 3. ought to应该，应当(ought to与should意思接近，大多数情况下二者可以互换，但是should谈的是自己的主观看法，ought to则更多反映客观情况，在谈到法律

4、、义务和规定时使用 ) 1)should/ought (not) to do(不)应该做某事 You ought to leave right now. One ought not (oughtnt) to cross the street without looking at traffic light. 2)shouldought tohave过去分词”既可表示本该做而事实上没有做的事，也可以表示惊讶、赞叹等情绪。 You should have told her about it the day before yesterday42021/7/24 lose weight weight

5、n. weigh v.称重.，衡量（link-verb:称重为) put on weight=gain weight 增加体重 control ones weight 控制体重 by weight 按重量计算 lose相关短语: lose heart 丧失勇气或信心 lose face 丢面子 lose sight of 看不见 lose ones way 迷路 lose ones breath 喘不过气来52021/7/244.curiosity n好奇心，求知欲 Curiosity drove Wang Peng inside.1.The letter wasnt addressed to

6、 me but I opened it out of curiosity.2.I saw her eyes fixed on me in curiosity.3.Children are curious about/show curiosity about everything around them.4.A student should always be curious to learn.5.It is curious that he should have asked you that question.虚拟语气62021/7/24 5.get away with. (n/doing)

7、a)不因某事而受惩罚。不因某事而受惩罚。I wont have you getting away with cheating in the exam. b)偷携某物潜逃。偷携某物潜逃。The robbers robbed the bank and got away with a lot of money. c)收到较轻的惩罚。收到较轻的惩罚。He was so lucky to get away with a fine for such a serious mistake get down to sth/doing.开始认真对待某事开始认真对待某事 Isnt it time you got d

8、own to marking the papers? get rid of摆脱；除掉摆脱；除掉 You must get rid of this bad habit.72021/7/24 get in插话；收获；进入 get down下来；取下；放下 get across被理解，(把)讲清楚 get off从下来；下车；下去 get through花光(时间、钱等)；通过；接通电话 get on上车；搭乘 get over克服(困难)；从中恢复过来 get out 出去；把弄出 get along with进展；与相处82021/7/24 6. Lie v. 说谎(lying, lied, l

9、ied);平躺(lying, lay,lain) n. 谎言(liar撒谎的人) Lie to sb about sth. 关于某事向某人撒谎 He lied to me about the result. Tell sb a lie=tell a lie to sb He is lying in the bed. Lay v.放置，下蛋，产卵，赌钱(laying, laid, laid) Please lay the book on the table. The hens are laying in the nests. How much did you lay on the race.92

10、021/7/247.win back：赢回，重新获得 she won her money back Its difficult to win back someones love once you lost it. He won what he lost back with his efforts.8.strength: nC长处；强项 U力量；体力 strengthen vt.&vi.加强weakness n.弱点，缺点，不足 weak adj. weaken v.减弱，使变虚弱.strengths and weaknesses:优点和缺点eg:The government deci

11、ded to take some measures _ (strength) the economy. 102021/7/24strong-strength-strengthen long-length-lengthen high-height-heighten deep-depth-deepen辨析：辨析：strength, energy, force, powerstrength:力量，体力，精神力量energy:人的精力，工作、活动的能力，自然界的能量等force:物理意义上的力，为指某事而使用的力量，常指武力power:人或机器的功能、职位、权力或政权(天津高考)The days ar

12、e gone when physical_(strong) was all you needed to make a living.112021/7/249.consult v咨询；请教；商量，查阅eg:Please consult the card catalogue first if you want to borrow books in the libraryconsult sb. about sth 就某事向某人咨询eg:She consulted a lawyer about her divorce.consult (with) sb. about/on sth 与某人就某事商议eg

13、:He consulted with his business partner about the matter.consult a dictionary/a teacher 查阅词典、请教老师eg:The teacher advised us not to consult the dictionary for every new wordconsult with a friend 和朋友商议122021/7/24 10.earn ones living:谋生谋生 earn ones living by =live by=make a living by靠谋生 earn ones own li

14、ving 自食其力 earn money=make money 挣钱 earn salary/income 挣工资/收入 earn respect 赢得尊敬 (2011辽宁高考) You are old enough to _ your own living. win B.gain C.take D.earn 132021/7/24 11.in debt负债负债 be/stay out of debt不负债；还清债务 He was in debt when he was poor, but he has been out of debt since he got rich. be in deb

15、t to sb.欠某人债 He is in debt to Tom. be in sbs debt.欠某人的情；感激某人 Lily is in Lucys debt. pay off ones debts偿清债务 He has paid off his debts since he got rich. get/fall/run into debt 负债 pay for the debt:偿还债务142021/7/2412.glare at 怒视，带有敌意 辨析：glare at/glance at/stare at glare at 怒目而视，由于生气而瞪着眼看 glance at 扫视，一瞥

16、，粗略地看 stare at 张大眼睛死死地盯着，由于好奇、无礼或傲慢而长时间地看 其他“看”： witness vt.& n. 目击(者) observe vt.&vi. 观察 spot vt. 发现；认出152021/7/2413.spy (v/n) 监视，侦查，看见 n. 间谍 1) 暗中监视；侦查。 eg: It is impolite to spy into other peoples windows. 2) 看见，发现。 eg:He suddenly spied an old friend in the supermarket. spy on 暗中监视，侦查 spy

17、 out 暗中查明162021/7/24 14.limit vt.限制；限定n.界限；限度 The amount of money you have to spend will limit your choice. limited adj.有限的 be limited to sth.受限制于 eg:The number of members is limited to five every year. within limits 在某种程度上，有一定限制 beyond the limit 超过限度 without limit 无限制地 to the limit of .达到.的限度 set a

18、 limit to 设定.的限度 the speed limit 车速限制 limit .to把.限制在. limit sb. to (doing) sth 限制某人做某事Its already beyond the limit.Obviously theres no limit to the amount of flattery a person wants. 可见一个人受马屁的容量,是没有底的. 172021/7/24 15.benefit vt.& vi.有益于；有助于；受益有益于；有助于；受益 benefit sb.对某人有益对某人有益 We should spend the

19、money on something that will benefit everyone. benefit from/by.从从受益，得益于受益，得益于 We can benefit from the project. get benefit from从从中受益中受益 We can get benefit from the project. beneficial adj.有利的；有裨益的；受益的 be beneficial to=be of(much，great)benefit to sb. =be beneficial to.对对有益有益 We should spend the money

20、 on something that will be beneficial to everyone. We should spend the money on something that will be of great benefit to everyone.for the benefit of=for ones benefit 为了为了.的利益的利益182021/7/bine v. 和和.结合起来结合起来 combine.with 和.结合起来 辨析combine, connect, join, link Combine:结合，组合，把2个或2个以上的人或物混合起来，成为不可分割的一体。

21、 Connect:连接，联系。强调通过第三者把双方连接，联系起来connect.with/to Join: 接合，连接。侧重把原来不相连的物体紧密地连接在一起 join.to Link: 连接式的连接。用接合物或其他方式连接link A with/to B192021/7/24 17.cut down削减；删节；砍倒；缩短削减；删节；砍倒；缩短 In this way they cut down the fat and increased the fibre in the meal. cut off 切断(电，煤气)，使孤立，隔绝 eg:I felt that I was totally cu

22、t off.(isolated) cut down 削减，缩小，砍倒 cut across 走捷径 cut in 插话 cut through 穿过 cut away 切除 cut out 删除 cut up 切碎 202021/7/2418.before long 不久以后，一会儿 辨析：before long/long before before long=soon,与一般将来时或一般过去时连用 long before 在.之前很久，在.之前早就 it was not long before.不久就. it will not be long before 不久就会. 巧记：long 在前，

23、很久前；long在后，不久后 It was long before 过了很久才. It was not long before.没过多久就. It will be long before.要过很久才会 It will be not long before.要不了多久就会.212021/7/2419.cooperation:N.合作，协作 in cooperation with:和.合作 eg:They worked in close cooperation with the British Tourist Authority V.cooperate:合作，配合(with) eg: The tw

24、o groups agreed to cooperate with each other.222021/7/24232021/7/24 You are what you eat. 人如其食。人如其食。 First wealth is health. 健康是人生的第一财富。健康是人生的第一财富。 An apple a day keeps the doctor away. 一天一个苹果，医生不来找。一天一个苹果，医生不来找。 -Emerson242021/7/24COME AND EAT HERE252021/7/241.Wang Peng sat in his empty restaurant

25、feeling very frustrated. 1)feeling very frustrated 现在分词在句中作伴随状语 eg.She sat on the chair reading a newspaper.(表伴随) Walking in the street, she met her old friend.(表时间) Seeing no body at home , she decided to eat outside.(表原因) The child fell, striking his head against the ground.(表结果) He thought of his

26、 mutton kebabs, fatty pork cooked in the hottest, finest oil. 过去分词短语作后置定语，表被动。= which were cooked in the hottest oil. 2)feel frustrated at/with.因.而懊恼，对.感到沮丧 frustrated 修饰sb. frustrating修饰sth Eg.The flowers picked by him are very beautiful.262021/7/242.Nothing could have been better. 比较级与否定词连用表示最高级。=

27、 All his food could have been the best. Eg.I have never seen a better film. 常用的否定词：no, not, never, nothing, nobody, hardly 意义：再也没有比.更.的了。 表示最高级的其他表达方式： (1)can/couldnever/notenough/too.“再也不为过” any other +单数名词 （all）the other +复数名词 (2)比较级than any of the other + 复数名词 anyone else272021/7/24 eg:The book h

28、as a greater effect on me any other book that all the other books any of the other books eg:It was not until then that I suddenly realized nobody was happier (happy) than I was. eg:Must I turn off the gas after cooking? Of course.You can never be too careful with that.282021/7/24 3.Tired of all that

29、 fat? Want to lose weight? tired of 厌烦的 eg:He is tired of doing the same thing all year round. tired out 筋疲力尽 eg:I was tired out when I finally reach the top of the mountain. tired from 因而疲倦 I was very tied from running fast.292021/7/24 8.He could not have Yong Hui getting away with telling people l

30、ies. 1)have sb/sth. doing sth 让某人一直做某事，听任/容忍某人做某事 ,多用于否定句，不能让，不能容忍 have sb. doing 听任/容忍某人做某事， have sb. do 使/让某人做某事 have sth done 让某人做某事，让某事被做 eg:I cant have you_ (speak) to your mother in a rude manner. eg:-Can you go to watch football match with me tonight? -Sorry,but I have an important meeting _(

31、attend).302021/7/24 As a responsible teacher, he cant have any of his students _ (cheat) in the exam. I cant go to the cinema with you because I have a lot of homework_ (finish) Every year, Tom remembers to have some flowers _(send) to his mother on her birthday. They were so frightened that they ha

32、d the light _(burn) all night.312021/7/244.Only slimming foods served here.serve v. 充当.提供，服务，接待，供应serve sth. to sb:给sb提供sth serve-service-servant if my memory serves me 如果我没记错的话 serve at table 当侍者 serve ones time 任期内任职serve someone right 罪有应得；活该 serve ones/its turn 有用；起作用eg:We are_ people and we sho

33、uld _ the people heart and soul.A.servants of, serve B.service for, serve C.servants of, serve for D.servants of, serve of322021/7/24 5.It cost more than a good meal in his restaurant! more than 比.多，超过=over more than+adj./adv.=very much 非常 more than+n.不只是 more than a little 非常 nothing more than 不过是，

34、无非是 no more than 仅仅，只不过 not more than:不超过，不多于 no more.than.与.一样不 more.than.与其说.，倒不如说.332021/7/24 Yong Hui agreed to stay and soon they were both enjoying the dumplings, fatty pork and cola. 1) agree to (do) sth. 表示“同意某事或某建议”，后只能跟表“提议，计划，方案，打算，安排” Eg.He agreed to their proposal. 2）agree with sb. 同意某人

35、 Eg.I agree with every word you said. 3）agree on sth. 表示在某事上取得一致的意见 Eg.They agreed on a date for the next meeting. N。agreement：一致，协议，同意 agreement between A and B reach/achieve agreement342021/7/24 But dont you think it would be better if you were a bit thinner? 虚拟语气，表示与现在事实相反的假设时，条件状语从句的谓语动词用过去式（be用

36、were），而主句的谓语动词用would(should, could ,might)+动词原形。 eg:If I were you, I should study English better.352021/7/24GrammarModal verbs 情态动词情态动词 (II)Unit2 Healthy eating362021/7/241.作为情态动词用，常用在否定句和疑问句中。Dare (need) +S +VS + darent (neednt) +VI darent walk through the forest at night.Dare you walk through the

37、forest at night?You neednt return the book now.Need he go yesterday?可兼做行为动词的情态动词：可兼做行为动词的情态动词：need 、 dare 372021/7/242.作实义动词用，常用在肯定句中, 有人称、时态、和数的变化He needs to go there himself.He has grown up,we dont need to worry about him.3.Sth (sb) need( want, request)+ doing/ to be done The house needs cleaning/

38、 to be cleaned The boy needs sending to the hospital at once.382021/7/24Our color TV set is still good enough. You neednt have bought a new one.4.neednt have done 表示原本不必表示原本不必要做的事情却已经做了的情况要做的事情却已经做了的情况,意为意为“本不必要本不必要”Your home is not far from your school ,so you neednt have leftin such a hurry then.

39、392021/7/245.注意对注意对need问句的回答问句的回答: -Need I finish the work today? -Yes, _. No, _. No, _.you mustyou needntyou dont have to-Must we do it now? -No, you _. neednt(dont have to)402021/7/24情态动词的其他用法情态动词的其他用法may well + v = have good reason to (理所当然） You may well say so.may/ might as well = had better do.

40、(最好。） You may as well say so.may as well +v.+as+v (与其.不如.) ( 最好 . 而不要 .）You might as well throw your money away as lend it to him.1. may412021/7/241.Judging from his accident, he must be from the south,2.It is eleven oclock at night and the lights are off. They must be sleeping now,isnt he? arent they?因因must后是系动词后是系动词 be must后接的是后接的是be sleeping，是对正在进，是对正在进行的情况推测行的情况推测2.与与must有关句子的反意疑问句有关句子的反意疑问句422021/7/241.We must have learned 2,000 words by the end of last term, hadnt we?3.He must have gone to Beijing,didn