人教版英语必修三Unit2全ppt课件(单词详解).pptx

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1、Unit 2,Words and expressions,1.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.,2.balance n天平；平衡；结

2、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 balancelose ones balance失去平衡 keep.in balanceplease keep a balance between work and play.I cant keep my balanc

3、e.=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？,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、义务和规定时使用 )1)should/ought (not) to do(不)应该做某

4、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 yesterday,lose weight weight n.weigh v.称重.，衡量（link-verb:称重为)put on weight=gain weight 增

5、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,4.curiosity n好奇心，求知欲 Curiosity drove Wang Peng inside.,1.The letter wasnt addressed to me but I opened it out of curiosity.,2.I saw her eyes fixed on me in curio

6、sity.,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,5.get away with. (n/doing)a)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。The rob

7、bers robbed the bank and got away with a lot of money.c)收到较轻的惩罚。He was so lucky to get away with a fine for such a serious mistakeget down to sth/doing.开始认真对待某事Isnt it time you got down to marking the papers?get rid of摆脱；除掉You must get rid of this bad habit.,get in插话；收获；进入get down下来；取下；放下get across被

8、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,6. Lie v. 说谎(lying, lied, lied);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 sbHe is lying in the be

9、d.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.,7.win back：赢回，重新获得,she won her money backIts 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

10、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 decided to take some measures _ (strength) the economy.,strong-strength-strengthen long-length-lengthen high-height-heighten deep-depth-deepen辨析：strength, energy, force, powerstre

11、ngth: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 are gone when physical_(strong) was all you needed to make a living.,9.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. abo

12、ut 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: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,

13、10.earn ones living:谋生earn ones living by =live by=make a living by靠谋生earn ones own living 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,11.in debt负债be/stay out of debt不负债；还清债务He was in debt when he

14、 was poor, but he has been out of debt since he got rich.be in debt 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,12.glare at 怒视，带有敌意 辨析：glare at/glance a

15、t/stare atglare at 怒目而视，由于生气而瞪着眼看 glance at 扫视，一瞥，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,13.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 superma

16、rket.spy on 暗中监视，侦查 spy out 暗中查明,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

17、set a 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.,15.benefit vt.& vi.有益于；有助于；受益benefit sb.对某人有益We should spend the money on something that will

18、 benefit everyone.benefit from/by.从受益，得益于We can benefit from the project.get benefit from从中受益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.对有益We should spend the money on something that will be beneficial to everyone

19、.We should spend the money on something that will be of great benefit to everyone.for the benefit of=for ones benefit 为了.的利益,bine v. 和.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。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

20、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 B,17.cut down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 cut 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 c

21、ut up 切碎,18.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，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 lo

22、ng before.要不了多久就会.,19.cooperation:N.合作，协作,in cooperation with:和.合作eg:They worked in close cooperation with the British Tourist AuthorityV.cooperate:合作，配合(with)eg: The two groups agreed to cooperate with each other.,Unit 2 Healthy Eating-reading,You are what you eat. 人如其食。 First wealth is health. 健康是

23、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。 -Emerson,COME AND EAT HERE,1.Wang Peng sat in his empty restaurant 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 n

24、o 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 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. frus

25、trating修饰sthEg.The flowers picked by him are very beautiful.,2.Nothing could have been better.,比较级与否定词连用表示最高级。= 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” an

26、y 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 else,eg:The book has a greater effect on me any other bookthat all the other books any of the other bookseg:It was not until then that I suddenly realized nobody was happier (happy) than I was.eg:Must I turn off the gas afte

27、r cooking?Of course.You can never be too careful with that.,3.Tired of all that 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

28、.,8.He could not have Yong Hui getting away with telling people lies.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 matc

29、h with me tonight? -Sorry,but I have an important meeting _(attend).,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

30、 birthday.They were so frightened that they had the light _(burn) all night.,4.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 tur

31、n 有用；起作用eg:We are_ people and we should _ the people heart and soul.A.servants of, serve B.service for, serve C.servants of, serve for D.servants of, serve of,5.It cost more than a good meal in his restaurant!more than 比.多，超过=overmore than+adj./adv.=very much 非常more than+n.不只是more than a little 非常no

32、thing more than 不过是，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.,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

33、意某人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 Breach/achieve agreement,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were），而主句的谓语动词用

34、would(should, could ,might)+动词原形。eg:If I were you, I should study English better.,Grammar,Modal verbs 情态动词 (II),Unit2 Healthy eating,1.作为情态动词用，常用在否定句和疑问句中。,Dare (need) +S +VS + darent (neednt) +V,I darent walk through the forest at night.Dare you walk through the forest at night?You neednt return th

35、e book now.Need he go yesterday?,可兼做行为动词的情态动词：need 、 dare,2.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/ to be cleaned The boy needs sending to the hospital at o

36、nce.,Our color TV set is still good enough. You neednt have bought a new one.,4.neednt have done 表示原本不必要做的事情却已经做了的情况,意为“本不必要”,Your home is not far from your school ,so you neednt have leftin such a hurry then.,5.注意对need问句的回答: -Need I finish the work today? -Yes, _. No, _. No, _.,you must,you neednt,

37、you dont have to,-Must we do it now? -No, you _.,neednt(dont have to),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.(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

38、to him.,1. may,1.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must后是系动词 be,must后接的是be sleeping，是对正在进行的情况推测,2.与must有关句子的反意疑问句,1.We must have learned 2,000 words by the end of last term,hadnt

39、 we?,3.He must have gone to Beijing,didnt it?,hasnt he?,若句中含有过去完成时的时间状语，用过去完成时完成反意疑问句,若句中含有过去的时间状语，用一般过去时完成反意疑问句,若句中不含任何时间状语， 用现在完成时完成反意疑问句,2.It must have rained last night, for the road was very muddy，,.can not but+do sth 表示“不得不，只好”。I can not but admire your bravery.我不得不钦佩你的勇气 。I could not but choo

40、se to go.我只好去 。,3. can,1.判断正误:,How dare you say such a thing? How dare you to say such a thing?,He darent to speak English before such a crowd, did he?He darent speak English before such a crowd, dare he?,Exercises,Nobody need to be afraid of catching the disease.Nobody need be afraid of catching th

41、e disease.,These dishes need be cleaned carefully.These dishes need to be cleaned carefully.These dishes need cleaning carefully.,1.There was a lot of fun at yesterdays party. You_ come, but why didnt you? A. must have B. should C. need have D. ought to have,D,2.I wonder how he_that to the teacher.

42、A. dare to say B. dare saying C.not dare say D.dared say,D,3.Chinese must have the largest number of speakers, _.A.mustnt they B. havent they C. dont they D. didnt they,C,4.As it turned out to be a small house party, we _ so formally.A neednt dress B. didnt have to dress upC. Might not have dressed up D. neednt have dressed up,D,Thank you!,