八年級英語上冊單元知識點總結

1、八年級英語上冊單元知識點總結 新目標八年級英語上冊第一單元unit 1.how often do you exercise?i.?重點短語歸納：on weekends?在周末1. go to the movies?去看電影2. look after=take care of?照顧3. surf the internet?上網(wǎng)4. healthy lifestyle?健康的生活方式5. go skateboarding?去滑滑板watch tv看電視6. keep healthy=stay healthy= keep in good health保持健康keep +?形容詞表保持某種狀態(tài)do s

2、ome reading?閱讀7. exercise= take/do (much) exercise=do sports鍛煉8. eating habits?飲食習慣9. take more exercise?做更多的運動10. the same as?與什么相同11. once a month一月一次12. be different from?不同13. twice a week一周兩次.three times a week一周三次14. make a difference to?對什么有影響as teachers, you must believe that you can make a

3、difference to the lives of your students. 身為教師，你們必須堅信你們能夠影響學生的一生。a false step will make a great difference to my future. 錯走一步對我的前程來說會產(chǎn)生很大影響。15. how often?多久一次，詢問動作發(fā)生的頻率how many times 多少次 ，用來提問做某事的次數(shù)16. although=though雖然?不能與but連用although he is old, he is quite strong.(he is old, but he is quite stron

4、g.)句子中，有although或though就不可再用but，但可用yet或still“仍然，還”；有because就不能再用so.? 17. most of the students=most students大多數(shù)學生18. shop=go shopping=do some shopping?購物19. as for至于20. activity survey活動調(diào)查21. do homework做家庭作業(yè)22. do house work做家務事23. eat less meat吃更少的肉24. junk food垃圾食物25. be good for?對什么有益26. be bad f

5、or對什么有害27. want to do sth?想做某事28. want sb to do sth想某人做某事29. try to do sth?盡量做某事30. come home from school放學回家31. of course=certainly=sure當然32. get good grades取得好成績33. some advice 一些建議some advice 中的advice 是不可數(shù)名詞 a piece of advice 一則建議 give advice 提出建議? take ones advice 采納或聽從某人的建議4. help sb to do sth幫

6、助某人做某事=help sb with sth35. a lot of vegetables=many vegetables許多蔬菜36. hardly= almost not幾乎不?hardly ever很少，幾乎不，從不37. keep/be in good health保持健康38.your favorite program你最喜歡的節(jié)目39. animal world?動物世界40. play soccer踢足球41.every day?每天every?day?與?everyday1. every day作狀語，譯為“每一天”。如：we go to school at 7:10 eve

7、ry day.我們每天7：10去上學。i decide to read english every day.我決定每天讀英語。2. everyday 作定語，譯為“日常的”。she watches everyday english on tv after dinner.她晚飯后在電視上看日常英語。whats your everyday activity?你的日常活動是什么？42.once or twice a week?每周一兩次43. three or four times a week?每周三四次44. at green high school?在格林高中45. all students?

8、所有的學生46. most students?大多數(shù)學生47. some students?一些學生48. no students?沒有學生49.the result of a survey?調(diào)查結果50.the result for “watch tv”“看電視”的調(diào)查結果51. improve your english?提高你的英語52. drink milk?喝牛奶53. pretty healthy?相當健康prettyadv.?相當，非常pretty（用作副詞時） =rather=very=quite 非常，相當54. kind of= a little有點i think im ki

9、nd of unhealthy.我想我有點不健康。二.?重點句子：1.how often do you exercise你（你們）多久鍛煉一次身體？how often +?助動詞do(does或did) +?主語?+ do sth.疑問詞how often是問頻率(多久一次),（在這里助動詞do(does或did)?是起幫助構成疑問的作用）與一般現(xiàn)在時或一般過去時連用，回答一般是用表示頻率的副詞，如：once, twice, three times, sometimes, often, quite, often, never, every day, once a week , twice a

10、month , three times a month , three or four times a month等。how often do you go to the factory? twice a week.你們多久到工廠去一次？每星期兩次?！癶ow often does he go shopping?” “he goes shopping once a month.”2“what do you usually do?on?weekends?” “ i usually play soccer.”“周末你通常做什么？”“我通常踢足球?！钡谝粋€do為助動詞,?在這起幫助構成疑問的作用；而第

11、二個do則是實義動詞。翻譯：what do you usually do on weekends? i often go to the movies.what does she usually do on weekends? she sometimes go hiking.3. “whats your favorite program?” “its animal world.”?“你最喜歡什么節(jié)目？”“動物世界?！?.?as for?homework , most students do homework every day .as for.意思是“至于；關于”，常用于句首作狀語，其后跟名詞、

12、代詞或動詞的-ing形式（即動名詞）。如：as for him，i never want to see him here.?至于他，我永遠不希望在這里見到。as for the story，youd better not believe it.?關于那故事，你最好不要相信。至于我自己，我現(xiàn)在不想去。as for myself, i dont want to go now.至于那個人，我什么都不知道。as for the man, i know nothing about him.5. mom wants me to get up at 6:00 and play ping-pong with

13、her .?want to do sth.?意思是“想要做某事”；want sb. to do sth.意思是“想要某人做某事”。如：do you want to go to the movies with me？你想和我一起去看電影嗎？the teacher doesnt want us to eat hamburgers.老師不想讓我們吃漢堡包。有很多動詞后面用這種結構做動詞的復合賓語ask sb. to do sth.叫某人做某事tell sb. to do sth.告訴某人去做某事help sb. (to) do sth.?幫助某人做某事6. she says its good for

14、 my health.be good for.表示“對有益（有好處）”;其反義為：be bad for.。（這里for?是介詞，后跟名詞、代詞或動名詞）如：its good for us to do more reading.?多讀書對我們有好處。reading in bed is bad for your eyes.在床上讀書對你的眼睛有害。7. how many hours do you sleep every night?8. i exercise every day , usually when i?come home from school?.9. my eating habits

15、are pretty good .這里pretty相當于very?。10.i try to eat?a lot of?vegetables , usually?ten to eleven times a week?.try to do sth.表示“?盡力做某事?”?，不包含是否成功的意思而try doing sth.表示“（用某一辦法）試著去做某事”。如:youd better try doing the experiment in another way.你最好試試用另一種方法做這個試驗。11. my healthy lifestyle helps me?get good grades.h

16、elp sb.(to) do sth.幫助某人做某事12. good food and exercise help me to study better.這里better是well的比較級，而不是good的比較級13.is her lifestyle?the same as?yours or different?is her lifestyle?the same as?your lifestyle or is her lifestyle?different from?yours? be the same as / be different from 14. what sports do you

17、 play 15. a lot of vegetables help you to?keep in good health?.?keep in good health = keep healthy = stay healthy16. you must try to eat less meat .try to do sth.表示“?盡力做某事?” ,不包含是否成功的意思,less是little的比較級17. that sounds interesting.這是“主語+系動詞+表語”結構的簡單句。sound（聽起來），look（看起來），smell（聞起來），taste（嘗起來），feel（覺得）

18、，seem（好象），grow（變得）,get（變得）等詞在英語中可用作系動詞，后跟形容詞作表語。如：it tastes good.這味道好。the music sounds very sweet.?這音樂聽起來很入耳。the smoke grew heavier and heavier.?煙霧變得越來越濃了。18. i think im kind of unhealthy.我想我有點不健康。kind of= a littlea kind of一種三知識結構.?注意sometimes與幾個形似的詞的區(qū)別。(1) sometime是副詞，意為“在某個時候”，“某時”will you come ag

19、ain sometime next week?(2) some time是名詞詞組，意為“一段時間”，做時間狀語用i will stay here for some time.我將在這呆一段時間。(3) some times是名詞詞組，意為“幾次，幾倍”i met him some times in the street last month.上個月我在街上遇到他好幾次了。（4）sometimes?是頻度副詞，意為“有時”?he sometimes goes skateboarding on weekends.?他有時周末去滑滑板。?time意為“時間”時，為不可數(shù)名詞。?意為“次數(shù)，倍數(shù)”時

20、，為可數(shù)名詞，what time is iti go to the movies three times a week.注意“次數(shù)”的表達方法一次?once，?兩次?twice，三次或三次以上用基數(shù)詞加上times：three times、five times、one hundred times.表示“幾次”的表達方法是：once a day/ a week/ a month/ a yeartwice a day/ a week/ a month/ a year same與different1.same指“相同的”，前面通常要有一個定冠詞the，但是如果same前面已經(jīng)有this，those等

21、詞，就不能再與the連用了。如：we are in the same class. 我們在同一個班級。結構：the same as與.一樣如：his mark is the same as mine.他的分數(shù)和我的分數(shù)一樣。2.different譯為“不同的”，其后的可數(shù)名詞應為復數(shù)形式。如：we are in different classes. 我們在不同的班級。結構：be different from與.不同如：this sweater is different from that one.這件毛衣與那一件不同。different的名詞形式為difference, 復數(shù)形式為differ

22、ences。hard / hardlyhard:hard既可作形容詞，也可作副詞。adj.?辛苦的，困難的adv.?努力，使勁地he had a hard (adj.)time in the past.its a hard(adj.) question. (=difficult)這是一個難的問題。the boy studies very hard(adv.). 那男孩學習非常努力he works?hard.?他努力工作。句子結構：its hard for sb to do sth做某事對某人來說是難的。如：its hard for him to finish the work. 完成那項工作對

23、他來說很難。注意區(qū)分：hard work 困難的工作 work hard 努力工作hardly是頻度副詞，表示否定的意思。（=almost not）通常用在形容詞、副詞和動詞之前。hardly: adv.?幾乎不，簡直不i can hardly see it.我?guī)缀蹩床坏剿e?hardly?works.?他幾乎不工作。it?hardly?rains here,?does?it?how often / how long / how soon / how farhow often:?“隔多久一次”，指動作的頻率，答語常用often, never, twice a week等表示頻率的副詞或短語

24、。（用于一般現(xiàn)在時或一般過去時）how often do you go to the movies?once a week. / i never go to the movies.how long: 1)“（延續(xù)）多長時間”，回答用for時間段或since時間點。（用于各種時態(tài)）；2)?詢問物體的長度。how long is the yellow river?how long have you learned english?i have learned it?for 5 years.i have learned it?since 5 years ago.how soon:?“還要多久才，多久

25、以后”，答語常用“in時間段”。（用于一般將來時）how soon will she come back?shell come back?in an hour.how far:?“多遠”，詢問距離。can you tell me how far?it is?from here to your home?how far?is it from your home to our school?its?2 kilometers?away.人教新目標八年級英語上冊unit 2 whats the matter?一重點短語歸納1. foot-feet?腳?復tooth-teeth?牙齒?復2. have

26、a cold?感冒3. have a stomachache?胃疼4. have a sore back背疼5. have a sore throat喉嚨疼6. have a fever發(fā)燒7. lie down and (have a)rest?躺下休息have a rest?休息8. hot tea with honey?加蜜的熱茶9. see a dentist?看牙醫(yī) see a doctor 看醫(yī)生10.drink lots of water多喝水11.lots of?,a lot of, a lota lot of=lots of，可以修飾可數(shù)名詞復數(shù)和不可數(shù)名詞，一般用在肯定句中

27、。：there are lots of （ a lot of） books in our library. there is a lot of water on the grounda lot,是一個副詞詞組，跟動詞連用；表示十分，很等意思；?thanks a lot.12. have a toothache牙疼13. thats a good idea好主意14. go to bed?去睡覺go to bed early 早上床睡覺 15. feel well感到好feel ill?感到不舒服i dont feel well= im not feeling well我感覺不舒服.16. st

28、art doing/ to do sth開始做某事to do 是一件事情完成了，開始做另外一件事情doing是原來的那件事情做到一半，現(xiàn)在又開始做了，是同一件事情。17. two days ago兩天前18. get some rest?多休息, 休息一會兒19. i think so我認為是這樣20.be thirsty口渴 21. be hungry?饑餓22. be stressed out緊張23. listen to music聽音樂24. healthy lifestyle健康的生活方式25. traditional chinese doctors傳統(tǒng)中醫(yī)26.need to do

29、 sth?需要做某事i have a toothache. i need to see a dentist.我牙痛,?我需要去看牙醫(yī).we need to keep our classroom clean.?我們需要保持教室的干凈.27. a balance of yin and yang陰陽平衡28. for example例如29.too much yin太多的陰, 陰氣太盛too much +?不可數(shù)名詞太多的?much too +形/副實在太?極其，非常too many +?可數(shù)名詞復數(shù)?太多的30.be good for sth./ doing sth. 對什么有益，對什么有好處be

30、 bad for sth./ doing sth. 對什么有害be good to 對好be good at =do well in 在方面好，擅長be?good(bad)?for、be?good?at的相關用法1.be good for 對.有益doing morning exercises is good for your health.做早操對你們的建康有益。2.be good at 擅長于.li ping is good at basketball.李平擅長于籃球。= li ping is good at playing basketball.李平擅長于打籃球。be good at =

31、 do well in 如：im good at math. = i do well in math.我擅長于數(shù)學。3.be good to 對.好parents are always good to their children.父母親總是對他們的孩子好。31.get good grades 取得好成績32.angry 用法 be angry with sb生某人的氣i was?angry?with him for keeping me waiting.我對他很生氣，因為他讓我等了好久。be angry at/ about sth?就某事生氣33.chinese medicine?中藥34.

32、be popular in + some place 在某地很流行?chinese medicine is now popular in many western countries.?現(xiàn)在中藥在許多西方國家受歡迎。35.in western countries在西方國家36.its easy to do sth做某事是容易的。?its important to do sth .做某事很重要。37.balanced diet平衡飲食38.get tired?感到疲倦be/get tired?39.go out at night在晚上出去when you are tired, you shoul

33、dnt go out at night.?疲倦時，晚上你不該外出40.stay healthy?保持健康=keep healthy=keep in good health41.at the moment此時，此刻= nowim not feeling very well at the moment42.enjoy sth.=like sth.(名詞)喜歡某物,enjoy doing sth.喜歡做某事=like dong sthenjoy oneself (myself, yourself,herself, himself, themselves, ourselves, itself反身代詞)

34、 玩得高興，過得愉快=have a good time = have a wonderful time =have fun43. conversation practice會話練習44. host family?寄宿家庭45. have a lot of headaches經(jīng)常疼痛im tired and i have a lot of headaches.?我很疲勞，而且經(jīng)常頭痛。46. a few +?可數(shù)名詞復數(shù)少許a little +?不可數(shù)名詞/形/副?一點47.he shouldnt eat anything=he should eat nothing.?他不應當吃任何東西.48.

35、give sb some advice給某人建議give advice 提出建議advice 是不可數(shù)名詞a piece of advice 一則建議take ones advice 采納或聽從某人的建議he gave me some good?advice.他向我提了一些很好的意見。49.sleep 8 hours a night每晚睡眠八小時50.take medicine 吃藥 服藥i have to take medicine three times a day for my cold.因為感冒，我不得不一天吃三次藥。二固定結構its+形 +for sb.+to do sth.做某事對

36、某人來說是的。its important to do sth .做某事很重要。its important for me to eat a balanced diet.?平衡飲食對我來說是很重要的.its easy to do sth做某事是容易的。its easy for us to find out the answer.找出答案對我們來說是容易的三重點句子1.whats the matter ? whats the mater with you ? 你怎么啦？?=whats the trouble with you?=whats wrong with youi have a cold /

37、have a sore back / have a stomachache2.thats too bad. you should / shouldnt?那太糟糕了.?你應該/不該you should lie down and rest / drink hot tea with honey / see a dentist / see a doctor .he shouldnt eat anything=he should eat nothing.?他不應當吃任何東西.3.im not felling well . 這里well表示身體狀況，不能用good代替i dont feel well= i

38、m not feeling well我感覺不舒服.4.when did it start ? about two days ago .什么時候開始的？大約兩天前5.i hope you fell better soon .我希望你很快好起來這里better是well的比較級6.traditional chinese doctors believe we need a balance of yin and yang to be healthy.傳統(tǒng)中醫(yī)認為我們需要陰陽調(diào)和以保持身體健康。這里 to be healthy是動詞不定式短語，作目的狀語7.you should eat hot yang

39、 foods, like beef.?你應該吃一些像牛肉之類的陽性食物。8.eating dangshen and huangqi herbs?is?also good for this.吃黨參和黃芪等草本植物也對這有好處。9.people who are too stressed out and angry may have too much yang.?太緊張易怒的人或許吃了太多的陽性食物。too much后跟不可數(shù)名詞，而too many后跟可數(shù)名詞復數(shù)10.its easy to have a healthy lifestyle ,and its important to eat a

40、balanced diet .有一個健康的生活方式很容易，飲食平衡是很重要的。 its easy to do sth . 做某事容易 / its important to do sth . 做某事重要11.you should rest for a few nights.?你應該休息幾個晚上12.i study late every night, sometimes until 2 am, but i dont think im improving.我每天晚上學到很晚，有時到凌晨2點鐘，但我認為我沒有提高。13believe in 信任某人，強調(diào)品質(zhì)，believe sb.相信某人的話 i b

41、elieve him, but i cant believe in him.他的話是真的，但是我不信任他這個人。14.i have a toothache . i need to see a dentist . need意思為 “需要” ，作實義動詞時，后跟動詞不定式，否定式為dont /doesnt / didnt need (to do sth.)；作情態(tài)動詞時，只能用于否定句或疑問句中，否定式為neednt(do sth.) ，除有過去式外，沒有其它的形態(tài)變化四知識結構.情態(tài)動詞should的用法should是情態(tài)動詞，它的基本用法是必須和其他動詞一起構成謂語。情態(tài)動詞沒有人稱和數(shù)的變化

42、，意為應該.。should（應當，應該）用于所有人稱，表示勸告或建議。eg. you should wait a little more.你應該再多等一會兒。- i have a very bad cold.我感冒很厲害。- you should lie down and have a rest.你應該躺下，多喝水。maybe與may?be1.maybe是副詞，譯為“也許、可能”，相當于“perhaps”。如：maybe he can answer the question.也許他能回答那個問題。he maybe is from the usa, too. 他可能也來自美國。2.may be中

43、的may為情態(tài)動詞，譯為“可能是.”。如：he may be from the usa, too. 他可能也來自美國。she may be our english teacher.她可能是我們的英語老師too?many,too?much與much?too1.too many意為“太多”，用于修飾可數(shù)名詞的復數(shù)。如：there are too many students in our class.我們班上有太多的學生。2.too much意為“太多”，用于修飾不可數(shù)名詞。如：we have too much work to do. 我們有太多的工作要做。3.much too表示“太”，用來修飾形

44、容詞或副詞。如：the box is much too heavy, so i cant carry it.箱子太重了，所以我搬不動它。few、a few、little、a little的區(qū)別和聯(lián)系： 1.few / a few用來修飾可數(shù)名詞，few表示否定意義，沒有，幾乎沒有；a few表示有肯定意思， 有幾個。例如： he has few friends here, he feels lonely. 他這里沒朋友，他感覺寂寞。 there are a few eggs in the basket.籃子里有幾個雞蛋。 2.little / a little用來修飾不可數(shù)名詞，little表

45、示否定意思，沒有，幾乎沒有。 a little 表示肯定意思，有一點兒。例如： there is little ink in my bottle, can you give me a little ink? 我的瓶子里沒有墨水了，你能給我點兒墨水嗎？ notuntil? 直到(否定句) 才，動詞為短暫性或瞬間性動詞?she didnt leave until we came.he went shopping after he got up.? =he didnt go shopping until /before he got up.? until/till 直到 （肯定句）動詞為延續(xù)性動詞w

46、e stayed here till/until 12 oclock.人教新目標八年級英語上冊unit 3what are you doing for vacation?一重點短語歸納1.?go camping?去野營2.?go shopping?去購物3.?go skateboarding?去滑滑板4.?go swimming?去游泳5.?go boating?去劃船6.?go skating?去滑冰7.?go hiking (in the mountains)?去山上徒步旅行/遠足8.?go climbing?去登山9.?go fishing去釣魚10.?go bike riding /

47、cycling?騎自行車旅行11.?go sightseeing?去觀光12.?visit my grandma/ cousins/ my friends in hong kong?拜訪我的祖母/堂兄弟/香港的朋友13.?spend time with friends?和朋友度過14.?babysit her sister?照顧她的妹妹15.?relax at home?在家休息16.?go to sports camp?去運動野營17.?go to the beach?去沙灘18.?take a vacation?去度假19.?go to tibet for a week?去西藏一個星期20

48、.?go away?離開，走開it made me sad to hear you have to?go away.聽到你非走不可，我覺得很傷心21.?(for) too long?太久22.?how long?多長（時間）23.?have a good time=have fun=enjoy oneself?玩得高興，玩得開心24.?get back to school/ home?回學校/回家go back= come back= get back?回來get back?to +some where回到某地get back home/ here /there回家、這、那兒go back t

49、o school回到學校=return to schoolgo back home回到家=return home25.?stay for three weeks呆三個星期26.?take walks / take a walk?散步take walks=have walks=go for a walk散步27.?rent videos?租錄像帶28.?a famous french singer?一個著名的法籍歌手29.?take a long vacation度長假30.?take vacations in europe?在歐洲度假31.?think about/ of?考慮/思考32.?s

50、omething different/ interesting/ important?一些不同的/?有趣的/?重要的東西i have something interesting to tell you.?我有一些有趣的事要告訴你。she wants something new.她想要一些新的東西。33.?spend time in the beautiful countryside?在美麗的鄉(xiāng)村度過34.?forget all the problems?忘記所有的問題(煩惱)35.?sleep a lot?多睡覺,睡個夠36.?cant wait?迫不及待cant wait?to do sth

51、迫不及待做某事she cant wait to get home to see her parents.她迫不及待的想回家看望父母。37.?a good place to go sightseeing?一個觀光的好地方38.?leave for italy/ greece/ spain/ europe?離開/出發(fā)去意大利/希臘/西班牙/歐洲39.?places to visit in china?在中國參觀的地方40.?plan my vacation to italy?計劃去意大利度假41.?the first week in june?六月的第一周42.?leave for ?離開/出發(fā)去

52、leave的用法1.“l(fā)eave+地點”表示“離開某地”。例如：when did you leave shanghai?你什么時候離開上海的？2.“l(fā)eave for+地點”表示“動身去某地”。例如：next friday, alice is leaving for london.下周五，愛麗斯要去倫敦了。3.“l(fā)eave+地點+for+地點”表示“離開某地去某地”。例如：why are you leaving shanghai for beijing?你為什么要離開上海去北京？43. rent videos to sb.?租碟片給某人 rent videos from sb.?從某人那租碟片

53、44. make a movie?拍電影45. ask sb about sth?問某人某事46. at night =in the evening在晚上?47.what/how about+ doing怎么樣呢?48 on monday在星期一?49.next week?下周?50.the great wall 長城二固定結構1. show sb. sth.?讓某人看某物?= show sth. to sb.?把某物給某人看 he showed me a postcard from?hong kong yesterday.?= he showed a postcard to me from

54、hong kong yesterday.類似的結構還有：?give sb. sth. = give sth. to sb.把某物給某人buy sb. sth. = buy sth. for sb.給某人買某物2. send sb. sth.?寄給某人某物?= send sth. to sb.?寄某物給某人 my friends sent me a letter just now.?= my friends sent a letter to me just now.3. think about/ of sth./ doing sth.考慮某事/考慮做某事 he often thinks abou

55、t going to europe for vacation.4. decide on sth.?決定某事 decide to do sth.?決定做某事 they will decide on the case(案件) tomorrow. he decided to go sightseeing at last.5. plan to do sth.?計劃做某事(過去式) planned ?（現(xiàn)在分詞）planning she planned to go to greece for vacation.vacation plans?假期計劃make plans?制定計劃we should mak

56、e plans before we do anything.在做任何事前我們應該制定好計劃。6. forget to do sth.?忘記去做某事?forget doing sth.?忘記做過某事 dont forget to close the door when you leave the classroom.? i forget going to spain before.7. remember to do sth.?記得去做某事?= remember doing sth.?記得做過某事 remember to bring your book here tomorrow. he reme

57、mbered calling you just now.8. finish sth./ finish doing sth.?完成某事/完成做某事 do you finish your homework when did you finish doing your homework?9. need to do sth.?需要做某事? ?we need to go home early.10. leave for +?地名?離開/出發(fā)去? ? leave a for b?離開a地去b地? ? my parents and i are leaving (here) for beijing tomor

58、row.? ? my uncle will leave beijing for tokyo tomorrow.11. have a good time/ have fun?玩得開心 enjoy oneself? we had a good time/ had fun last night.? = we enjoyed ourselves last night. i hope you can have a good time/ have fun.? = i hope you can enjoy yourself/ yourselves.12spend意為“度過、花費（時間、金錢等）”其主語一般是人，常用的句式有：?spendon sth.spend(in) doing sth.?如：?how long do you spend on your homework everydayhow long do you spend (in) doing your homework everyday?你每天花多少時間做作業(yè)三重點句子1. what are you do