人教版八年级英语下册重点短语、句型及语法(精华全面)

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1、八年级下册英语短语、句型及语法Unit 1 Whats the matter?一、重点短语 1. have a fever 发热 2. have a cough 咳嗽3. have a toothache 牙疼 4. talk too much 说得太多5. drink enough water 喝足够的水 6. have a cold 受凉;感冒7. have a stomachache 胃疼 8. have a sore back 背疼9. have a sore throat 喉咙痛 10. lie down and rest 躺下来休息11. hot tea w ith honey 加

2、蜂蜜的热茶 12. see a dentist 看牙医13. get an X-ray 拍X 光片 14. take one s temperature 量体温15. put some medicine on sth. 在上面敷药16. feel very hot 感到很热 17. sound like 听起来像18. all weekend 整个周末 19. in the same way 以同样的方式20. go to a doctor 看医生 21. go along 沿着走22. on the side of the road 在马路边 23. shout for help 大声呼救2

3、4. without th inking twice 没有多想 25. get off 下车26. have a heart problem 有心脏病 27. to one s surprise 使. 京讶的28. thanks to 多亏了 ；由于 29. in time 及时30. save a life 挽救生命 31. get into trouble 导致麻烦32. right away 立即；立即 33. because of 由于34. get out of 离开;从出萍 35. hurt oneself 受伤36. put a bandage on sth. 用绷带包扎 37.

4、 fa ll down 摔倒38. feel sick 感到恶心 39. have a nosebleed 流鼻血40. cut his knee 割伤她的膝盖 41. put her head back 把她的头向后仰42. have problems breathing 呼吸困难 43. mountain climbing 登山运动44. be used to doing sth. 习惯做某事 45. run out (of) 用完;用尽46. so that 以便 47. so. . . that 如此 以至于48. be in control of 掌管;管理 49. in a dif

5、ficult situation 在闲境屮50. keep on doing sth. 继续或坚持做某事51. make a decision 做出决定52. take risks 冒险 53. give up 放弃二、重点句型1. What s the matter? What s the matter with you?= Whats the trouble with you?= What s wrong with you? 你怎么了？2. What should she do?她该怎么办呢？Should I take my temperature?我应当量一下体温吗？主语+ should

6、/shouldnt + 动词原形. .You should lie down and rest.你应当躺下休息一会儿。 You shouldn t go out at night.你晚上不应当出去。3. Do you think it comes from a newspaper or a book?你觉得它是来自报纸还是书呢？4. I think I sat in the same way for too long without moving.我想我以同样的姿势一动不动地坐得太久了。5. She said that the man had a heart problem and shoul

7、d go to the hospital三、语法点（一）、询问某人的健康问运及遭到麻烦的体现措施(1)询问某人患了何种疾病或遇到了何种麻烦时，常用如下几种构造来体现：Whatsthematter(withsb)?（某人）怎么了？Whatswrong(withsb)?（某人）怎么了？Whatsthetrouble(withsb)?（某人）出什么事了？Whathappened(tosb)?（某人）发生了什么事？AreyouOK?你没事吧？Isthereanythingwrongwithsb.？某人有什么事吗？(2)要体现身体疼痛或不舒服，可用如下构造：某人+have/has+病症Thetwinsh

8、avecolds双胞胎感冒了。Sb.+have/has+a+headache/toothache/stomachache/backache/earache.Shehadastomachachelastnight她昨晚肚子痛。某人+have/has+a+sore+发病部位Hehasasorethroat她喉咙痛。某人+hurt(s)+身体部位或反身代词Hehurthisleg.她的腿受伤了。某部位+hurt(s).Myheadhurtsbadly我头痛得厉害。某人+have/has+apain+inones+身体部位，Ihaveapaininmychest我胸口痛。(Thereis)someth

9、ingwrongwithones+身体部位Thereissomethingwrongwithmyrighteye我的右眼有毛病。其她体现方式Shehasahearttrouble她有心脏病。Hegothitonthehead她头部受到了撞击。Shecutherfinger她割破手指了。二情态动词should的用法1Should为情态动词，意为“应当；应当”，否认式为shouldnt，其后接动词原形，无人称和数的变化。常用来表达征询意见、建议、劝告、规定或义务等。Youshoulddrinkhotwaterwithhoney你应当喝加有蜂蜜的开水。Heshouldputhisheadback她应

10、当把头后仰。Weshouldtryourbesttohelphim.我们应当竭力去协助她。YoushouldntwatchTV.你不应当看电视。2Should用于主语为第一人称的疑问句，表达征询意见。ShouldIputsomemedicineonit?我应当给它敷上药吗？Shouldwetellheraboutit?我们应当告诉她这件事吗？【拓展】在英语中，表达建议的说法有诸多，并且都是中考考察的重点。重要构造有：Wouldyoulike(todo)sth？你想要乐意（做）某事吗？Wouldyouliketoplaybasketballwithme?你想要和我一起打篮球吗？ShallI/we

11、dosth?我我们做好吗？Shallwegotothezootomorrow?明天我们去动物园，好吗？Whynotdosth?为什么不呢？Whynotjoinus?为什么不加入到我们当中来呢？How/Whataboutdoingsth?做某事怎么样？Howaboutgoingswimming?去游泳怎么样？Letsdosth让我们做吧。Letsgohome我们回家吧。Youdbetter(not)dosth你最佳（不）要做某事。Youdbetternotgotherealone你最佳不要独自去那儿。Unit 2 I ll help to clean up the city parks.一、重点

12、短语 1. Clean-Up Day 清洁日 2. an old peoples home 养老院3. help out with sth. 协助解决困难 4. used to 曾经 过去_5. care for 关怀;照顾 6. the look of joy 快乐的表情7. at the age of 在.岁时 8.clean up 打扫(或清除)干净9. cheer up (使)变得更快乐;振雀 10. give out 分发;散发11. come up with 想出；提出 12. make a plan 制定筹划13. make some notices 做些公示牌 14. try

13、out 试用;试行15. work for 为工作；为. 效力 16. put up 建造;举起;张贴17. hand out 分发;散发;发给 18. call up 打电话;召集19. put off 推迟;延迟 20. for example 例如；例如21. raise money 筹钱;募捐 22. take after 与.相像;像23. give away 赠送;捐赠 24. fix up 修理;修补;解决25. be similar to 与相似 26. set up 建立;设立27. disabled people 残疾人 28. make a difference 影响;有

14、作用29. be able to 可以 30. after-school reading program课外阅读项目二、重点句型1. The boy could give out food at the food bank.这个男孩可以在食品救济站分发食物。2. Clean-Up Day is only two weeks from now.清洁日离目前仅仅两周的时间。3. He volunteers at an animal hospital every Saturday morning.每周六上午，她都在一家动物医院当志愿者。4. Last year, she decided to try

15、 out for a volunteer after-school reading program.去年，她决定去参与一种课外阅读项目的志愿者的选拔。5. you can see in th e ir eyes that they re going on a different journey w ith each new book.从她们的眼睛里你可以看到她们正在进行每本不同的新书之旅。6. I want to put off my plan to work in an animal hospital until next summer.我想把我在动物医院工作的筹划推迟到来年夏天。7. Mo

16、st people today are only worried about getting good jobs to make lots of money.目前的大部分人只是为找一份能挣许多钱的好工作而着急。8. You helped to make it possible for me to have Lucky.在你的协助下，我才有也许拥有“幸运儿”。三、语法点动词不定式 A. 作主语为避免句子的头重脚轻，常用it作为形式主语，而真正的主语动词不定式后置。 常用句型：It +be+adj./n.+(for/of sb.) to do sth./It takes sb. some time

17、 to do sth. B. 作宾语动词want, decide, hope, ask, agree, choose, learn, plan, need, teach, prepare常接动词不定式作宾语。 C. 作（后置）定语常用于“have/hassth.to do”或“enough名to do”“Its time to do sth.”等构造中。 D. 作宾语补足语tell, ask, want, invite, teach, like, call等可接带to的动词不定式作宾语补足语，构成 tell/ask/want /call/invite sb. to do sth.构造。 【注意

18、】动词不定式作使役动词和感官动词的宾语补足语时应省去to：“一感(feel)，二听(listen to, hear)，三让(let, make, have,，四看(look at, see, watch, notice)，半协助(help)”。 E. 动词不定式作状语 重要用来修饰动词，表达目的，成果或因素。为了强调目的，有时可以把动词不定式放在句首，或在不定式前加in order (to) 或so as (to) “为了，目的是”。常用构造有too + adj./adv. + to do sth.等。 F. 固定句式中动词不定式的用法 常用的形式有： had better (not) do

19、sth./Would you like to do sth.?/Why not do sth.?/Would you please (not) do sth.?等。Unit 3 Could you please clean your room?重点短语 go out for dinner 出去吃饭 stay out late 在外面待到很晚go to the movies 去看电影 get a ride 搭车work on 从事 finish doing sth. 完毕做某事clean and tid y 干净整洁 do the dishes 洗餐具take out the rubbish 倒

20、垃圾 fold your/the clothes 叠衣服sweep the floor 扫地 make your/the bed 整顿床铺clean the livng room 打扫客厅 no problem 没问题welcome sb. 欢迎某人 come home fro m school/ work放学/下班回家throw down 扔下 sit down 坐下come over 过来 take sb. for a walk 带某人去散步all the time 始终;总是 all day/evening 整曰/夜do housew ork 做家务 shout back 大声回应wal

21、k away 走开 .share the housework 分担家务a com fortable home 一种舒服的家 in surprise 惊讶地get som ething to drin k 拿点喝的东西 watch one show 观看一种节目hang out 闲逛 pass sb. sth. 把某物传给某人lend sb. sth. 把某物借给某人 get sth. wet 使某物弄湿 hate to do sth. 讨厌做某事 do chores 做杂务help sb. (to ) d o /with sth协助某人干某事bring a tent带顶帐篷来 buy some

22、 snacks买些小吃go to the store去商店 invite sb. to a party邀请某人参与约会make sb. do sth. 使某人做某事 enough stress足够的压力awaste of time挥霍时间 in order to为了get good grades获得好成绩 mind doing sth. 介意做某事depend on依赖;依托 look after/take care of 照顾；照看develop children s independence发展孩子的独立性do one s part in (doing ) sth.做某人分内的事二、重点句

23、型1. Could you please.do sth. ?Could you please clean your room?你能整顿一下你的房间吗？2. I have to do some work.我必须干些活。3. Could I+ do sth. ?Could I use your computer?我可以用一下你的电脑吗？4. She won t be happy if she sees this mess.如果她看到这样乱七八糟的话,她会不快乐的。5. For one week, she did not do any housework and neither did I.整整一周

24、，她什么家务活都不干了，我也同样。6. My mom came over as soon as I sat down in front of the TV .我一在电视机前坐下，我妈妈就过来了。7. hate + ( to do/ doing) sth.I hate to do chores.我讨厌做杂务。三、语法点 Could you please.?句型 （1）祈求别人时一般用此句型，也可以说：Can you.please?情态动词could或can在这里均表达祈求，在乎思上无区别，但是用could在于其上显得更委婉、客气、诚恳。在平常生活中常使用could you/I.?若在句末加上pl

25、ease，则显得更礼貌。 Could you help me find my book,please?你能帮我找到我的书吗？ （2）对could you/I.?的问句作出肯定回答，常用“sure/certainly/of course”等；如果作否认回答，常用“sorry或oh,please dont”。 一般不用no开头，用no显得语调生硬、不礼貌。 （3）表达祈求的句式： Would you like to do.? Would you mind doing.? Lets do. Shall I/we do.? Please do.(祈使句前加please) 提示：could you pl

26、ease.与could I Please.两种问句，前者是祈求别人帮忙的句式，后者是有礼貌地向别人祈求容许的交际用语。试比较： Could you please help me?请你帮我一下好吗？ Could I please invite my friends to my birthday party,Mom? 妈妈， 我能邀请我的朋友参与我的生日约会吗？Unit 4 Why dont you talk to your parents?一、重点短语 1. have free time有空闲时间 2. allow sb. to do sth. 容许某人做某事3. hang out with s

27、b. 与某人闲逛 4. after-school classes课外活动课5. get into a fight with sb. 与某人吵架/打架6. until midnight直到半夜7. talk to sb. 与某人交谈 8. too many太多9. study too much学得过多 10. get enough sleep有足够的睡眠11. write sb. a letter给某人写信 12. call sb. up打电话给某人13. surprise sb. 令某人惊讶 14. look through翻看15. be angry with sb. 生某人的气 16. a

28、 big deal重要的事17. work out成功地发展;解决 18. get on with和睦相处19. fight a lot常常吵架/打架 20. hang over笼罩21. refuse to do sth. 回绝做某事 22. offer to do sth. 积极提出做某事23. so that以便 24. mind sb. doing sth. 介意某人做某事25. all the time始终 26. in future此后27. make sb. angry使某人气愤 28. worry about sth. 紧张某事29. copy one s homework抄袭

29、某人的作业30. be oneself做自己31. family members 32. spend time alone独自消磨时光33. give sb. pressure给某人施压 34. have a fight with sb. 与某人吵架35. compete with sb. 与某人竞争 36. free time activities业余活动37. get better grades获得更好的成绩 38. give one s opinion提出某人的观点39. learn exam skills学习应试技巧 40. practice sports体育训练41. cause s

30、tress导致压力 42. cut out删除二、重点句型1. I studied until mid night last night so I did nt get enough sleep.我昨晚学习到半夜因此睡眠局限性。2. Why don t you forge t about it?你为什么不忘掉它呢？3. Although she s wrong , i t s not a big deal.虽然她错了,但这并不是什么大事儿。4. He should talk to his friend so that he can say h es sorry.她应当跟朋友谈谈以便她能说声对不

31、起。5. May be you could go to his house.也许你可以去她家。6. I guess I could, but I dont want to surprise him.我想我可以.但我不想让她感到惊讶。 三、语法点 1.提建议向别人发出邀请，祈求，建议，或征求某人的意见的其她体现方式：How /what about doing sth.?（about是个介词，可跟名词或动名词）“怎么样？” Youd better (not) do something.“你最佳（不）做某事” Would you like sth ?:“你想要某物Lets do sth? What

32、should I do ? ( should表达祈求、征询对方意见) 2.学会谈论问题和学会用why dont you提建议向别人发出邀请，祈求，建议，或征求某人的意见的体现方式： Why dont you do something? =Why not do something? 你为什么不做某事呢？ 来表达祈求、征询对方意见 until, so that ,although引导的状语从句： 1)until：在带有till或until引导的时间状语从句里，如果主句用肯定式，其含义是“始终到时”，谓语动词只能用延续性动词。如果主句用否认式，其含义是“直到才”, “在此前不”, 谓语动词可用瞬间动

33、词。Dont get off until the bus stops. 2）so that引导目的状语从句（为了，以便）例如：He studies hard so that he could work better in the future 3）although的用法意思相称于though（尽管，虽然），引导让步状语从句。引导的从句不能与并列连词but，and， so等连用，但可以和yet， still等词连用。 例如：Although he was tired, he went on working.尽管她很累，但是她继续工作Unit 5 What were you doing when

34、the rainstorm came?一、重点短语 1. make sure 确信;确认 2. beat against. 拍打 3. fall asleep 进人梦乡；睡着 4. die down 逐渐变弱；逐渐消失5. wake up 醒来 6. in a mess 一团糟7. break. . apart 使分离 8. in times of difficulty 在困难的时候9. at the time of 当.时候 10. go off (闹钟)发出响声11. take a hot shower 洗热水澡 12. miss the bus 错过公交车13. pick up 接电话

35、14. bring. together 使靠拢15. in the area 在这个地区 16. miss the event 错过这个事件17. by the side of the road 在路边 18. the Animal Helpline 动物保护热线19. walk by 走路通过 20. make ones way to. . 在某人去的路上21. hear the news 听到这个消息22., important events in history 历史上的重大事件23., for example 例如 24., be killed 被杀害25., over 50 5 0多

36、(岁） 26. a school pupil 一种小学生27. on the radio 通过广播 28., in silence 沉默;无声29., more recently 近来地;新近 30., the World Trade Center 世贸中心31., take down 拆除;摧毁 32., have meaning to 对故意义33., remember doing sth. 记得做过某事 34., at first 一方面;最初二、重点句型1. What were you doing at eight last night?昨晚8 点你在干什么？ I was taking

37、 a shower.我在洗淋浴。2. When it began to rain, Ben was helping his mom make dinner.当开始下雨的时候，本正在帮她妈妈做晚饭。3. What was Jenny doing while Linda was sleeping?琳达在睡觉的时候，珍妮正在干什么？ While Linda was sleeping, Jenny was helping Mary with her homework.琳达在睡觉的时候，珍妮正在帮玛丽做作业。三、语法点过去进行时1.基本概念：过去进行时表达在过去某一时刻或一段时间内正在进行的动作。这一特

38、定的过去时间除有上下文暗示以外,一般用时间状语来表达。 2. 构造 was / were ( not ) + 动词-ing 3. 句式 肯定式： I/He/She/It was working. We/You/They/ were working. 否认式: I/He/She/It was not working. We/You/They/ were not working. 疑问式和简略回答: Was I working? Yes, you were. No, you were not. Were you working? Yes, I was. No, I was not. Was he/

39、she/it working? Yes, he/she/it was. No, he/she/it was not. Were we/you/they working? Yes, you/we/they were. No, you/we/they were not. 注： 1) was not常缩略为wasnt; were not常缩略为werent。 2) 一般过去时与过去进行时用法的比较: 一般过去时表达在过去某个时间发生过的动作或存在的状态, 而过去进行时则表达在过去某一时刻或某一段时间正在进行的动作。 例如: David wrote a letter to his friend las

40、t night. 大卫昨晚给她的朋友写了封信。(信写完了。) David was writing a letter to his friend last night. 大卫昨晚始终在给她的朋友写信。(信不一定写完。) 4.过去进行时中的when和while when, while 区别： 1) 由when引导的时间状语从句，主句用过去进行时，从句应用一般过去时； 由while引导的时间状语从句，主句用一般过去时，从句应用过去进行时。 When the teacher came in, we were talking. 当此句变化主从句的位置时，则为： While we were talking

41、, the teacher came in. 2)如果从句和主句的动作同步发生，两句都用过去进行时的时候，多用while引导。如： They were singing while we were dancing. Unit 6 An old man tried to move the mountains一、重点短语 1. work on doing sth. 致力于做某事 2. as soon as . 一就.3. once upon a time 从前 4. continue to do sth. 继续做某事5. make sth. happen 使某事发生 6.try to do sth.

42、 试图做某事7. the journey to sp. .之旅 8. tell the/a story 讲故事9. put on 穿上 10. a little b it 有点儿11. keep doing sth. 坚持做某事 12. give up 放弃13. instead of 替代;反而 14. turn . . into 变成15. get married 结婚 16. the main character 重要人物；主人公17. at other times 在此外某些时候 18. be able to 能;会19. come out (书、电影等)出版 20. become i

43、nterested in. 对感爱好21. walk to the other side 走到另一边去22. a fairy tale 一种神话故事23. the rest of the story 故事的其他部分24. leave sb. to do sth. 让某人做某事25. make a plan to do sth. 筹划/筹划做某事26. go to sleep 去睡觉27. lead sb. to sp. 把某人领到某地 28. get lost 迷路29. change ones plan 变化筹划 30. tell sb. to do sth. 叫某人做某事31. in th

44、e moonlight 在月光下 32. find one s way home 找到某人回家的路33. the next day 第二天 34. send sb. to sp. 派某人去某地二、重点句型1. W hat do you th in k about/of. . ?So what do you th ink about the story of Yu Gong?你觉得愚公的故事怎么样？2. It doesn t seem adj . to do sth .I t doesn t seem very possible to move -a mountain.把一座山给移掉仿佛不太也许

45、。3. This is because.This is because he can make 72 changes to hisshape and size, turning himself into different animals and objects.这是由于她会根据她的形状和大小，做出72种变化，可以将自己变成不同的动物或东西。 so th a t+从句Sometimes he can make the stick so small that he can keep it in his ear.有时候，她可以让她的金箍棒变得很小，以至于可以放在耳朵里。5. It take sb.

46、 some time to do sth .Because they were so big that it took a long time to walk to the other side.这些（山）太高了，她们要花好长时间才干翻越过去。6 . not. . util十从句Don t eat it until you get to the forest.你们达到森林之后才干吃。三、语法点 1. unless引导条件状语从句 unless = if not 除非，若不 They will go tomorrow unless it rains. = They will go tomorro

47、w if it doesnt rains. 2. as soon as引导时间状语从句。 就 He will come and see you as soon as he can. 3. so.that引导成果状语从句 句型1：主语+谓语+so+形容词/副词+that从句 The wind was so strong that we could hardly move forward. 句型2： so +形容词 + a/an + 单数名词 + that从句 It was so hot a day that they all went swimming. 句型3. so + many/ few

48、+ 复数名词 + that从句 He has so few friends that he often feels lonely. 句型4： so +much/ little + 不可数名词 + that 从句 I had so little money that I couldnt buy a pen.Unit 7 W hats the highest mountain in the world?一、重点短语1. as big as 与同样大 2. one of the oldest countries 最古老的国家之一3. feel free to do sth. 随意地做某事4. as

49、far as I know 据我所知5. man-made objects 人造物体 6. part of. . 的构成部分7. the highest mountain 最高的山脉 8. in the world 在世界上9. any other mountain 其她任何一座山 10. of all the salt lakes 在所有的咸水湖中11. run along 跨越 12. freezing weather 冰冻的天气13. take in air 呼吸空气 14. the first people to do sth. 第一种做某事的人15. in the face of d

50、ifficulties 面临危险 16. give up doing sth. 放弃做某事17. achieve one s dream 实现某人的梦想 18. the forces of nature 自然界的力量19. reach the top 达到顶峰 20. even though 虽然;尽管21. at birth 在出生的时候 22. be awake 醒着23. run over with excitement 兴奋地跑过去 24. walk into sb. 撞到某人25. fall over 摔倒 26. take care of 照顾;照顾27. every two ye

51、ars 每两年 28. cut down the forests 砍伐林木29. endangered animals 濒危动物 30. fewer and fewer pandas 大熊猫越来越少31. be in danger 处在危险之中32. the importance of saving these animals拯救这些动物的重要性二、重点句型1. It is -adj. + (fo r sb. ) to do sth.It is also very hard to take in a ir as you get near the top.当你接近山顶时，连呼吸都会困难。2. .

52、 . . is because.One of the main reasons is because people want to challenge themselves in the face of difficulties.其中的一种重要的因素是人们想要在面临困难时挑战自己。3. . . . show(s) that.The spirit of these climbers shows us that weshould never give up tryin g to achieve our dreams.这些登山者的精神向我们证明：我们永远都不应当放弃实现自己的梦想。4. How hi

53、gh/ deep/. . . is . ?How high is Qomolangma?珠穆朗玛峰有多高？5. Although. “ ，Although Japan is older than Canada，it is much smaller.虽然日本比加拿大有更悠久的历史，但是日本比加拿大小多了。6. sb. spend tim e/money doing sth.Adult pandas spend more than 12 hours a day eating about 10 kilos of bamboo.成年大熊猫一天要花1 2 个多小时的时间吃大概三、语法点 形容词副词的原级

54、、比较级和最高档 （一）原级句型： 1. A is as+原级+ as+ B 表达A 与B同样eg: He is as tall as me. 2.A is not as/so +原级+ as B表达A不如Beg:He is not as tall as me. 3.只能修饰原级的词，very，quite，so，too，so, enough, pretty等 例如，He is too tired to walk on.她太累了以至于不能再继续走了。 （二）比较级句型 可以修饰比较级的词，much，a lot，far，的多a little，a bit，一点儿 even甚至，still仍然 Eg.

55、 Lesson One is much easier than Lesson Two.第一课比第二课容易得多。 Tom looks even younger than before.汤姆甚至比此前更年轻。 1.当句中有than 时则用比较级。 eg: He is fatter than me. 2当句子中的比较对象为两者时用比较级：“特殊疑问词+be+形容词比较级，A or B？” eg: Which is bigger，the earth or the moon？哪一种大，地球还是月球？ 3. “比较级+and+比较级”表达“越来越”。 eg.The flowers are more and

56、 more beautiful.花儿越来越美丽。 加more构成比较级的形容词则用more and more +形容词表达越来越 eg: English is more and more important. 4. “the+比较级，the+比较级”表达“越，越”。 Eg. The more careful you are，the fewer mistakes youll make. 5.“A+be+the+形容词比较级+of the two+”表达“A是两者中较的”。 Eg.Look at the two boys. My brother is the taller of the two.

57、6.A+be+形容词比较级+than+any other+单数名词(+介词短语)” 表达“A比同一范畴的任何一种人/物都”，含义是“A最”。 Eg. The Yangtze River is longer than any other river in China. =The Yangtze River is the longest river in China. （三）最高档常用句型构造 1“主语+be+the+形容词最高档+单数名词+in/of短语”表达“是中最的”。 eg：Tom is the tallest in his class./of all the students. This apple is the biggest of the five. 2“主语+be+one of the+形容词最高档+复数名词+in/of短语”表达“是中最之一”。 Eg：Beijing is one of the largest cities in China. 3“特殊疑问词+be+the+最高档+A，B，or C？”用于三者以上 eg Which is the biggest? The moon,the sun or ths earth? 4.“the +序数词+最高档+单数名词+范畴”。表达是第几大（） eg: The Yel