2016中考英语八年级上复习ppt

1、英语（新目标）B,新课标（RJ）,陶志承,Unit 1Where did you go on vacation? Unit 2 How often do you exercise? Unit 3 Im more outgoing than my sister. Unit 4 Whats the best movie theater? Unit 5 Do you want to watch a game show? 阶段综合测试卷一（Units 15）,单元复习,Unit 6Im going to study computer science. Unit 7 Will people have r

2、obots? Unit 8How do you make a banana milk shake? Unit 9 Can you come to my party? Unit 10If you go to the party, youll have a great time! 阶段综合测试卷二（Units 610） 阶段综合测试卷三 （Units 110）,单元复习,2013新版八年级上册1-10分单元知识点归类总结,Unit 1 Where did you go on vacation?（谈论假期生活，一般过去时） Unit 2 How often do you exercise?（谈论生活

3、习惯，一般现在时） Unit 3 Im more outgoing than my sister（谈论事物对比， 形容词比较级） Unit 4 Whats the best movie theater?（谈论事物比较，形容词最高级） Unit5 Do you want to watch a game show?（谈论内心想法，一般现在时） Unit6 Im going to study computer science.(谈谈生活的目标，一般将来时) Unit7 Will people have robots?(对将来生活的预言，一般将来时) Unit8 How do you make a b

4、anana milk shake?(描述进程祈使句) Unit9 Can you come to my party?(学习邀请，作出、接受和拒绝邀请，学习表请求的句子) Unit10If you go to the party, youll have a great time.(作出决定，学习if的条件状语从句),英语新课标（RJ）,八年级英语上册1-5单元小结,go on vacation stay at home go to the mountains go to the beach visit museums go to summer camp quite a few study for

5、 go out most of the time taste good have a good time of course feel like feel like doing sth. go shopping in the past walk around,去度假 待在家里 去爬山 去海滩 参观博物馆 去参观夏令营 相当多 为而学习 出去 大部分时间 尝起来很好吃 玩得高兴 当然 给的感觉；感受到 想要做某事 去购物 在过去 四处走走,because of one bowl of the next day drink tea find out go on take photos someth

6、ing important up and down buy sth. for sb. / buy sb. sth. tastelook + adj. nothingbut+动词原形 seem+（to be）+ adj. arrive in+大地点 / arrive at+小地点 decide to do sth.,因为 一碗 第二天 喝茶 查明；弄清 继续 照相 重要的事 上上下下 为某人买某物 尝起来看起来 除了之外什么都没有 看起来 到达某地 决定去做某事,try doing sth. try to do sth. forget to do sth. enjoy doing sth. st

7、art doing to do sth. stop doing sth. stop to do sth. dislike doing sth. so+adj.+that+从句 tell sb. (not) to do sth. old enough,尝试做某事 尽力去做某事 忘记做某事 喜欢做某事 开始做某事 停止做某事 停下来去做某事 不喜欢做某事 如此以至于 告诉某人（不要）做某事 （年龄）足够大,1）something，anything，nothing，everything是指物的不定代词。 somebody，someone，anybody，anyone，nobody，everybody

8、， everyone是指人的不定代词。 somewhere，anywhere，nowhere，everywhere是指地点的不定副词。 2）当形容词修饰不定代词、不定副词时，放于其后； something special; somewhere wonderful. 3）不定代词、不定副词做主语时，谓语动词用第三人称单数。如：Is everybody here? 大家都到齐了吗？ 4）something，somebody，someone，somewhere用于肯定句及表示请求或建议的疑问句中，而anything，anybody，anyone，anywhere用于否定句、疑问句及条件状语从句中。如

9、： Did you do anything interesting? 你做了有趣的事吗？（表疑问） Why dont you visit someone with me? 你为什么不跟我一起去拜访下某个人呢？（表建议） If anything happens, please tell me. 如果有事情发生，请告诉我。,四、词语辨析：,辨析： 1. get to/reach/arrive 都是“到达“的意思 get to+地点=reach+地点= arrive at+地点（小）=arrive in+地点（大） 注意：若他们后面要加地点副词here, there, home等，则不需要加介词。

10、2. nothing.but do sth.意为“除.之外； 只有”，如： I have nothing to do but watch TV all day long. 我整天除了看电视什么也没干。 3. feel like 意为：“感受到；摸起来”，后跟宾语从句或名词。如： I felt like I was a bird. 我感觉我是一只鸟。 It feels like a stone. 它摸起来像一块石头。 另外，构成短语 feel like doing sth.意为“想做某事”。如：I feel like eating.我想吃东西。,4. enjoy doing sth . 喜欢做;

11、乐意做 enjoy oneself 过得愉快 =have fun/have a good time.,注：地点副词home，here，there前介词省略）,5.I wonder what life was like here in the past. 我想知道过去这里的生活是什么样的,(n): 奇迹；令人惊讶的事情 如：No wonder! 难怪；不足为奇！,(v) 惊讶 如：wonder at sth. ; wonder to do sth. 感到疑惑；想知道 如：I wonder where they are going.,6.few与little 的区别：,：quite a few与q

12、uite a little quite a few 意为“很多;不少”，修饰可数名词复数； quite a little 意为“很多;不少”，修饰不可数名词。 a. He stays here for _ _ _days. b.There is _ _ _water in the bottle(瓶子).,辨析,7. Still no one seemed to be bored. 仍然没有人感到烦闷。 1）seem意为“好像；似乎；看来”，是个连系动词，构成的短语有：,seem to do sth. 好像做某事 如： They seem to wait for you. 他们似乎在等你。 se

13、em（to be）+adj. 似乎. 如：He seemed ( to be) ill yesterday.昨天他似乎病了。 It seems that + 从句 似乎. 如： It seems that he was ill yesterday. 昨天他似乎病了。 其他的系动词有：be ; feel(觉得）; keep（保持）; stay（保持）;look（看来.）; smell（闻起来）sound（听起来）taste（尝起来）,2） bored (adj)，意为“感到厌倦的、无聊的”,其主语是某人； boring(adj)，意为“令人厌倦的、无聊的”其主语是某物。 如： I got bor

14、ed with the boring work. 我对这无聊的工作感到厌倦。,相类似的词语还有： interested/ tired/ excited/ amazed/surprised interesting/ tiring/ exciting/ amazing/surprising,辨析：bring与take bring意为“带来；拿来”， 指从别处带到说话者所在地。 take意为“拿走；带走”， 指从说话者所在地带到别处去。,8. decide（v）决定 decide to (not) do sth. = make a decision (not) to do sth. decision

15、(n) decide on doing sth. 决定做某事 如：Li Lei has decided to go to Beijing . 李雷已经决定去北京。 9. Because of the bad weather, we couldnt see anything below.,1） because of + 名词/代词/名短 I had to move because of my job. 因为工作的原因 because +从句 如：I do it because I like it. 我做这件事是因为我喜欢 2）below意为“在.下面;低于”，其反义词为 above，意为“在.上

16、面；高于”,10.enough 1) 形容词/副词enough 如：wet/quietly enough足够漂亮 enough 名词如：enough umbrellas 足够的雨伞 2) (形/副)enough+ (名) to do sth. 足够去做 如：I have enough money to go to Beijing. 我有足够的钱去北京。 She is not old enough to go to school. 她年龄不够，不能去上学。 同义句： She is too young to go to school. (too to :太 而不能) She is so young

17、 that she cant go to school.,most of the time意为“大部分时间”，其中most为代词，意为“大部分；大多数”。 拓展most of意为“中的大多数”，它作主语时，谓语动词取决于most of后所修饰的名词。 a. Most of us_(be)going to the park. 我们大多数人要去公园。 b. Most of the food_(go)bad. 大部分的食物都变质了。,so+形/副+that 从句：She is so popular that everyone likes her. such+名短+ that 从句：She is su

18、ch a popular girl that everyone likes her.,11.如此以致于（结果）,12. so that 从句：以便（目的）如：He gets up early so that he can catch the early bus.,13.My classmates told me to keep going, so I went on. 我的同学告诉我坚持往前走，因此我便继续前 进了（P8） 1）tell sb. (not)to do sth. 意为“告诉某人（不要）做某事。 The teacher _ _ _ _ the window just now. 老师

19、刚才告诉我们擦窗户。 2）keep doing sth. 意为“继续做某事，一直做某事”。 She_ _ TV for two hours last night. 昨晚她持续看了两个小时的电视。,.My legs were so tired that I wanted to stop. 我的双腿太累了以至于我都想停下来。（P8）,1). He is _lovely a boy_we love him very much. 2). The little boy is _ young that he cant go to school.,常用的感叹句的结构： 1）What +adj.+ 复数名词

20、/ 不可数名词+主语+谓语！ 2）What +a/an+adj.+可数名词单数+主语+谓语！ 3）How +adj. +a/an+可数名词单数+主语+谓语！ 4）How+adj./adv. +主语+谓语！ eg: 1.What an interesting book it is! = How interesting a book is! 那本书多么有趣啊！ 2._a clever girl she is! A.Who B.What C.How D.Where 3. _clever a girl she is! A.Who B.What C.How D.Where 4._important jo

21、bs they did! A.What B.Who C.How D.Where 5._sweet water it is! A.Who B.What C.Where D. How 6._interesting the dog is! A.Who B.What C. Where D. How,14What a difference a day makes! 一天的差异多大啊！,what,how,what,what,how,建议的句式：,What/ how about +doing sth.? 如：What/ How about going shopping? Why dont you + do

22、sth.? 如：Why dont you go shopping? Why not + do sth. ? 如：Why not go shopping? Lets + do sth. 如： Lets go shopping Shall we/ I + do sth.? 如：Shall we/ I go shopping?,应答语：,接受：Certainly,Sure, /Yes, Id love to. Why not? Good idea! /Sure! OK!/ All right! Great!/Thats great./Sounds great.,拒绝：Id love to.But.

23、Im sorry. Im afraid not . Im afraid I cant . Sorry,I cant .,15.反身代词：myself , ourselves, yourself , yourselves, himself, herself, itself, themselves. 作动词或介词的宾语：经常在enjoy, teach, hurt, buy, introduce, dress, kill等动词和by, for, to, of等介词后作宾语。一年主考宾语回自身 He is teaching himself English.她在自学英语。 She was talking

24、 to herself.她自言自语。 He lives by himself in the country.他独自住在乡下。 1) Help yourself! 请随便吃吧！/请自己去取吧! 2) Make yourself at home! 别客气！ 3) make yourself heard /understood. 使你的话被人听得见/理解 4) teach oneself 自学=learn by oneself 5) by oneself 独自 6) for oneself 为自己；替自己 7) enjoy oneself 玩的愉快 8) dress oneself 给自己穿衣,.1

25、6We waited over an hour for the train because there were too many people. 因为人太多，所以我们等了一个 多小时的火车。（P5） 1）wait for意为“等候”，其后可接人或物。 Tom was waiting for a bus over there. 2）over介词，意为“多于；超过” ，相当于more than。 Eg : My father is over 40 years old. There are over eight hundred students in our school. 3) too many

26、意为“太多”，其后接可数名词复数。 He always has too many questions to ask me. 辨析：too many + 可数名词复数 意为“太多. ” too much + 不可数名词 意为“太多. ” much too + 形容词 意为“太. ” eg：I have homework to do today.,Unit 1 能力提升训练,英语新课标（RJ）,.书面表达 今天是6月23日星期日，天气晴朗。你和你的同学张宏参观了北京动物园。那里的动物十分有趣。当你看到有位游客在向猴子投喂食物时，就上前阻止说 请根据上面的提示，用英文写一篇日记，记述今天的经历。(注

27、意日记格式),Unit 1 能力提升训练,英语新课标（RJ）,One possible version： Sunday，June 23th Sunny It was sunny today. My classmate Zhang Hong and I visited Beijing Zoo.There are many animals there.They were so interesting.People loved them very much.When I was watching，I saw a visitor throwing food to the monkeys. I went

28、 over to stop him，and said, “Dont throw any food to the animals in the zoo.” We had great fun there.,Unit 1 易错点针对训练,英语新课标（RJ）,( )1.My mum _ sports yesterday morning. Adidnt Bnot did Cdoesnt do Ddidnt do ( )2._ was their vacation? It_ great. AWhat; was BHow; was CHow; is DWhat; is ( )3.It is sunny. W

29、hat _ weather! Aa good Ba bad Cgreat Dbad,D,易错点针对训练,B,C,Unit 1 易错点针对训练,英语新课标（RJ）,( )4.We usually stay at home on _days. Arain Braining Crainy Drained ( )5.I dont feel _ and dont want to eat _. Agood; anything Bwell; anything Cgood; nothing Dwell; something,C,B,英语新课标（RJ）,Unit 2 How often do you exerc

30、ise?,help with housework on weekends how often hardly ever once a week twice a month every day be free go to the movies use the Internet play tennis stay up late at least have dance and piano lessons go to bed early play sports be good for,帮助做家务 在周末 多久一次 几乎从不 每周一次 每月两次 每天 有空 去看电影 用互联网 打网球 熬夜；睡得很晚 至少

31、 上舞蹈课和钢琴课 早点睡觉 进行体育活动 对有好处,go camping notat all in ones free time the most popular such as go to the dentist more than less than help sb. with sth. help sb. to do sth. want sb. to do sth. spend time with sb. ask sb. about sth. by doing sth. the best way to do sth.,去野营 一点儿也不 在某人的空闲时间 最受欢迎的 例如 去看牙医 多于

32、；超过 少于 在某方面帮助某人 帮助某人做某事 想让某人做某事 和某人一起度过时光 向某人询问某事 通过做某事 做某事的最好方式,拓展： How often 多久一次 （提问频度，常用频度副词、频度短语回答） How long 多长时间（提问时间段，常用“for+一段时间”表示持续多久） How soon 多久以后（提问将来时，常用“in+ 一段时间”表示多久以后） How many +复n. 多少； How many times 多少次 How much +不可n. 多少； How much be ? 多少钱 How old多大年龄 ; How far 多远,maybe adv. 可能，大概

33、 （表示推测，通常用在句首） may be 情态动词+ v. 可能是 （表示推测，通常用在句中，主语后） I cant find anywhere. _she is at home now. = I cant find anywhere. She _ at home now.,Maybe,may be,maybe may be,三、习惯用法、搭配 1. help sb. with sth 帮助某人做某事 2. How about? =What about? .怎么样？/ .好不好？ 3. want sb. to do sth. 想让某人做某事 4. How many + 可数名词复数+ 一般疑

34、问句 .有多少. 5. 主语+ find+ that 从句 发现 6. Its + adj.+ to do sth. 做某事是.的 7. spend time with sb. 和某人一起度过时光 8. ask sb. about sth. 向某人询问某事 9. by doing sth. 通过做某事 10. Whats your favorite.? 你最喜欢的是什么？ 11 start doing sth. 开始做某事 12. the best way to do sth. 做某事的最好方式,四、词语辨析,1. exercise （v/n）的用法 1）（动）:锻炼. 如： He exerc

35、ises every day. 2) (可数名词)“.操;练习”. 如：do morning/ eye exercises; do math exercises (不可数名词):“锻炼;运动”讲：如： We often do / take exercise on weekends.,2.辨析：sometimes ，some times ，sometime ， some time sometimes 有时候。=at times也是“有时”的意思。提问用how often some times 几次。time作可数名词时可作“次数”解；表示“时间”时是不可数名词。How mang times so

36、metime 某个时候。可指过去或将来的某个时候。提问用when some time 一段时间。常与for连用。对它提问用how long 。 口诀记忆：分开“一段时间” ；相聚“某个时候”。 Eg：Sometimes I get up very late. 有时我起床很晚。 I will go to shanghai sometime next week. 下周某个时候我要去上海。 He reads the story some times. 他读这个故事几遍了。 Ill stay here for some time. 我将会在这儿呆一段时间。 练习： We plan to stay in

37、 Hainan for . 我们打算在海南呆一段时间。 I am sure that we have met _ before. 我肯定我们之前见过几次了。 I _ have letters from him. 有时我会收到他的来信。,3. hardly ever 几乎不 hardly ever相当于hardly eg：There is hardly any food left. 几乎没有食物剩下。 辨析：hardly 与hard hardly 几乎不，一般位于动词之前。 hard 形容词/副词， 努力，位于动词之后。 eg：He hardly works. 他几乎不工作。 He works

38、hard. 他工作努力。艰苦，hard work,4.辨析：maybe 和may be,1. Lily an English teacher. Lily可能是一名英语老师。 =_,5.how often表示“多久一次”，是对动作的频率进行提问。其回答通常有：,频率副词： always, usually, often, sometimes, hardly ever, never how often 次数时间段: 如：once or twice a week every 时间段: every day (每天) 区别：everyday（每天的；日常的） 注意：表示“一次或两次”时，一般用once和t

39、wice表示。如：once a month(一个月一次) 而表示“三次或以上”时，则用“数词times”结构。如：five times a year (一年五次),maybe (adv): 也许，大概 （一般放句首） (Maybe) he (maybe) knows it. may + v(原)：也许是，大概是 “情态动词+be动词”结构。（位于句中） He may know it. 如：Maybe he is at home.= He maybe is at home.= He may be at home.,(4) 多久(时间) 常用 for two days，for three hour

40、s等回答。 多长（某物的长度） 如：-How long is the river? - 10 kms. (5)how soon 用来询问过多久，多久以后，其答语是in two hours，in three days等。 如：How soon wil he come back？ In an hour。,由how构成的疑问词组的用法,（1） how many+ 可数名词复数 如：how many programs how much+不可数名词。 如：how much coffee 但how much=whats the price of.? 还有“多少钱”的意思 如：How much are th

41、ose pants? (2)how many times: “多少次”. 其答语表示次数。如：once ,twice，three times等 (3) How old.? 询问年龄 如：How old are you? I am five.,. “满的；饱的” be full of : The bottle is full of water. 瓶子里装满了水。 “忙的”=busy He had a full life,6.full,(n) 惊讶: to ones surprise 令某人惊讶的是 in surprise 惊讶地,7. surprise be surprised at sth.

42、对 感到意外 (v) 使惊奇、意外： be surprised to do sth. 惊讶做某事 be surprised that + 从句,如：I was surprised at the news = I was surprised to hear the news.,8.twenty percent students dont exercise at all. 百分之20的学生根本不锻炼。 . 百分数由percent来表示，构成：基数词+percent 。 Eg：Seventy percent of the boys like playing computer games. 男生中70

43、%喜欢完电脑游戏。 not. at all 意为“一点儿也不，根本不”。 Eg：I dont know about it at all. 对那件事我一点也不知道。 拓展：not at all = you are welcome 意为“不用谢，不客气”。 Eg：-Thank you for your help. -Not at all.,Although many students like to watch sports，game shows are the most popular. 尽管许多学生喜欢看运动类节目，但游戏类节目是最受欢迎的。 although 连词。意为“虽然，尽管”。but

44、 意为“但是”。英语中，although与but不能同时使用。 Eg：Although it rained，the boys still played outside. = It rained，but the boys still played outside. 尽管天下雨了，但男孩们仍在外面玩耍。 1. My cousin knows a lot about geography，_ he is only four years old. A. because B. so C. although,7.She says its good for my health. 她说那对我的健康有益。 （1）

45、be good for：“对有好处”。 如：Doing exercise is good for our health. （2）be good at：“擅长于” 如：He is good at playing football. (3) be good with: “与相处好” 如： The teacher is good with his students.,9.Its good to relax by using the Internet or watching game shows.,by+doing He learns English by singing English songs.

46、 通过 方式 He went home by bus.= He went home on the bus= He took the bus home.,through 通过 方式+名词：The best way to relax is through exercise （从里面）穿过： Climb through the window. 注意： 横过（从一边到另一边） walk across the street.,10. such as =like + 名短： 如： such as winning the game. for example + 句子： 如：Its healthy for t

47、he mind and the body.,例如,11.spend,度过（时间） 如：spend the weekend with family 花费（时间、钱） 如：He spent 20 yuan (in) buying the magazine.,同义句： He spent 20 yuan on the magazine. He paid 20 yuan for the magazine. It took him 20 yuan to buy the magazine. The magazine cost him 20 yuan.,重点： spend timemoney on sth.

48、在.上花费时间或金钱 He didnt spend much time on his homework. 他没在作业方面花很多时间。 I spend 200 yuan on a new coat. spend timemoney （in） doing sth. 花费时间或金钱做某事 Dont spend too much time watching TV. 不要花费太多时间看电视。 He always spend his time playing football. Eg: I enjoy playing computer games,but I cant too much time that

49、. A.take, doing B.spend, doing C.spend, for doing D.take, to do,12. but和however but 并列连词 “然而，但是”。 可直接连接前后两个句子，表转折关系。 However 副词 “然而，但是”。 不能直接连接句子，必须用逗号与句子隔开。 Eg:1.It began to rain, , we went out to look for the boy. 天开始下雨了，但我们还是出去寻找那个男孩了。 2. Its a sunny morning， very cold. 这是个晴朗的早晨，但是却很冷。 afraid 意为“

50、担心的，害怕的”。 .be afraid to do sth. 害怕做某事 Eg：I am afraid to travel by plane. 我害怕乘飞机旅行。 .be afraid of sb. sth. 害怕某人某物 be afraid of doing sth. 害怕做某事 Eg：She is afraid of the dog. 她害怕那只狗。 Dont be afraid of asking questions. 不要怕问问题。 be afraid to do sth.= _ 害怕做某事,13.find + 宾语 +名词, 发现 ： We have found him (to b

51、e) a good boy. find + 宾语 + 形容词， 发现： He found the room dirty. find + 宾语 + 现在分词， 发现 ： I found her standing at the door. find +it +形容词+to do sth. I found it difficult to work out this math problem .,一、一般现在时,一般现在时主要用来表示每天、每周等经常一直如此，长期进行下去的动作，其着眼点不在描述具体的动作，而是通过提出不断反复的动作，来说明某一真理或某一经常性习惯性的举动。,一般现在时的几种主要用法,

52、1）一般现在时表示客观事实、客观存在的普遍真理、用于一般现在时的时间状语常见的有：often， usually，always，sometimes， seldom，ever，never，every day（week，month，year）， once a year，now and them，from time to time。例如： The earth moves around the sun. Shanghai lies in the east of China.,地球绕太阳转动。,上海位于中国东部。,2）表示格言或警句,Pride goes before a fall. 注意：此用法如果出现

53、在宾语从句中，即使主句是过去时，从句谓语也要用一般现在时。 例：Columbus proved that the earth is round.,骄者必败。,哥伦布证实了地球是圆的。,3）表示现在习惯性的、经常重复的或定期发生的动作或存在的状态。,I leave home for school at 7 every morning. We go to school every day except on Sunday.,每天早上我七点离开家。,除星期天外，我们每天都上学。,4）表示能力、性格、个性等。,例如： I dont want so much. Ann writes good Engli

54、sh but does not speak well.,我不要那么多。,安英语写得不错，讲的可不行。,一般现在时态的几点注意：,1）表示“感觉”和“状态”或“关系”等的动词（如be，like，love，hate，want，think，remember，find，sound，forget，refuse，see，allow，prove，have，matter，taste，look，feel）常用一般现在时，不用现在进行时。例如： Carl and Wang Bing are students. In the evening I love sitting by the fire and playin

55、g my guitar.,卡尔和王斌是学生。,在晚上，我喜欢坐在篝火旁弹着吉他。,一般现在时态的几点注意：,2）有时用这个时态表示“按计划、规定，时刻表”要发生的动作，句中（都带有时时间状语），但限于少数动词，如：begin，come，leave，go，arrive，start，stop，return，open，close等。例如： The meeting begins at seven. The train leaves at 17:40.,会议在七点钟开始。,火车17：40离开。,一般现在时态的几点注意：,3) 还要注意其动词形式的变化。该时态主要由动词原形表示，但第三人称单数后要加词尾-

56、s或 -es，be和have有特殊的变化形式, be (am, is , are) have( has ) 。例表如下： 一般情况在词尾加-s ,包括以“元音字母+y”结尾的词 workworks, runruns, playplays 在以ch，sh，x，s等辅音字母或以元音字母o结尾的词加-es，如词尾为-e，只加-s missmisses, finishfinishes, teachteaches, loseloses, livelives go-goes do-does 以“辅音字母+y”结尾的动词，先变y为i，在加-es studystudies , try-tries,一般现在时态

57、的几点注意：,表示否定和疑问时： 1)实义动词做谓语的要借助于助动词dodoes He doesnt like his new school. Does he speak English well ? Do you/they-? Where does she live ?Where do they live ? 2)谓语中有be动词或情态助动词的，不能再加其它助动词 There isnt any rice in the bag . We cant do anything but wait. Where are you now ?,英语新课标（RJ）,Unit 2 能力提升训练,.书面表达 假如你最好的朋友Mary各方面习惯都很好。请从以下几个方面向大家介绍一下她的生活习惯： 1在学校很努力，经常在家看书，有时上网。 2身体很健康，每周锻炼三四次，每天步行上学。 3饮食