初二新目标下册第三单元练习
二. 根据句意,用括号内所给词的适当形式填空。
1. What's the __________(mean) of this English word?
2. The number of her __________(fly) out of Beijing is No. HU 7382.
3. We haven't seen you __________(somewhere) before.
4. Ben and Scott saved the boy's life. They are __________(hero).
5. It's time for class. Please keep __________(silent).
三. 用括号内所给动词的正确时态填空。
1. When they came into the room, Jack and Mike __________(do) their homework.
2. While I __________(read) a book, he __________(come) home.
3. I first saw Lisa two years ago. She __________(work) in a shop at that time.
4. I don't think Tom saw me, he __________(look) at a new dress at that time.
5. —Did you hear the noise?
—No, we __________(play) the piano then.
6. I didn't hear you, I __________(make) a phone call then.
7. Some girls __________(sing) in the park at eight o'clock last night.
8. We __________(listen) to the radio when someone knocked at the door.
9. Of course you couldn't see me, I __________(take) a bath at that time.
10. My mother __________(cook) at home at noon yesterday.
四. 按要求改写下列句子,每空一词。
1. She was cleaning the room when the telephone rang. (对划线部分提问)
__________ __________ she __________ when the telephone rang?
2. The children are eating lunch now. (用at this time yesterday 代替now)
The children __________ __________ lunch at this time yesterday.
3. He was writing to his friend at ten o'clock yesterday morning. (改为否定句) He __________ __________ writing to his friend at ten o'clock yesterday morning.
4. Were they mending your watches at that time? (作肯定回答)
__________, __________ __________.
5. I was in the park at 9 o'clock last Sunday. (对划线部分提问)
__________ __________ __________ at 9 o'clock last Sunday?
五单项选择。
1. Please tell us what time __________.
A. you will leave
B. will you leave
C. did you leave
D. are you going to leave
2. We saw a cat __________ the tree an hour ago.
A. at
B. in
C. of
D. with
3. The police __________ looking for the lost dog at the station.
A. is
B. was
C. are
D. am
4. Mr Li told his children __________ around the house.
A. walk
B. walking
C. walked
D. to walk
5. —Do you know when the plane will __________?
—Sorry, I don't know.
A. take off
B. take away
C. get off
D. get up
6. __________ Alan was ill, __________ he still went to work.
A. Although; but
B. But; although
C. 不填;不填
D. Although; 不填
7. The boy had fun __________ in the water this morning.
A. swimming
B. to swim
C. swim
D. swims
8. —What does your brother do?
—He is __________.
A. twenty years old
B. a barber
C. very well
D. a Chinese
9. This __________ is very nice. Please put it on.
A. computer
B. sandwich
C. basketball
D. shirt
10. Man walked __________ the moon for the first time __________ July 20, 1969.
A. in; in
B. at; at
C. on; on
D. on; in
六根据汉语意思完成下列句子,每空一词。
1. 他们听说这个事件时,他们在做什么?
What __________ they __________ when they __________ __________ the event?
2. 贼一看见警察就逃跑了。
Thieves __________ __________ as soon as they saw the policemen.
3. 今天早晨他很累,起床很困难。
He was very tired this morning. It was difficult to __________ __________ __________ bed.
4. 那位老人昨晚被人杀死了。
The old man __________ __________ by someone last night.
5. 不是所有的人都喜欢吃汉堡包。
__________ __________ the people like eating hamburgers.
八. 书面表达。
下面是李雷上星期六的活动时间表。请根据提供的信息,以 Li Lei's Day为题写一篇文章。
6:30 have sports
7:00 have breakfast
8:00 help his mother clean the room
9:30 read a book
11:30 have lunch
14:30 do his homework
16:00 play football with his friends
18:00 have supper
19:30 watch TV
22:00 go to bed
要求:1. 条理清楚,意思连贯,语句通顺;
2. 要将提示内容全部体现在文章中;
八年级英语第一学期第1单元同步练习题班级_______________ 姓名________________ 座号______________ 一.词汇. A. 根据句意及首字母提示,完成下列单词的拼写。 1.He writes to his father t__________a month. 2. Everyone likes to surf on the I__________. 3.Hamburger is a kind of j_________ food. I never eat hamburgers. 4.Do you find the d__________between the twins? 5.It's very important to have a good eating h____________. 6.The weather here is so cold, I can h______ stand it. 7.Eating a lot of vegetables is good for our h______. B. 用所给单词的正确形式填空: 8. Eat _____________(health), or you’ll get ill. 9.Bill goes to the movies ___________(one) a week. 10.It’s bad for students ______________(play) too much computer. 11.There is no _____________(different) between the two pictures. 12. My sister is kind of fat, and she must eat _________(little) meat. 13.What do you usually do on weekends? I often do some_____(read). 14.Good food and exercise help me _______ (study) better. 15.What’s your favorite exercise?--- ________ (swim). 二.单项选择。 16.Is your bike broken? Let__________you. A. me to help B. I help C. me help D. I to help 17.Although they feel tired,__________they still go on working. A. and B. but C. / D. so 18.The woman can't__________his son in the park. A. read B. watch C. look D. find 19.Li Lei works in England. He comes to China__________. A. three time a year B. three times a year C. three times year D. three time year 20.His grandmother is well because she often __________. A. exercises B. smokes C. sleeps D. sings 21.-__________do they play football? -Every day. A. How soon B. How much C. How many D. How often 22.His mother wants him__________at home today. A. stays B. stayed C. to stay D. staying 23.Here__________the results__________the student activity survey. A. is; with B. are; of C. is; of D. are; with 24.__________homework, we do their homework on Sunday. A. As for B. As to C. As of D. As from
Unit 3 Could you please clean your room? 一、重点短语 1.go out for dinner 2.stay out late 3.go to the movies 4.get a ride 5.work on sth. 6.finish doing sth. 7.clean and tidy 8.do the dishes 9.take out the rubbish 10.fold your/the clothes 11.sweep the floor 12.make your/the bed 13.clean the living room 14.No problem 15.welcome sb. https://www.wendangku.net/doc/c25119181.html,e home from school/ work 17.throw down 18.throw away https://www.wendangku.net/doc/c25119181.html,e over (to+地点) 20.take sb. for a walk 21.all the time 22.all day/evening 23.do housework 24.shout back 大声回应 25.walk away 26.share the housework 27. a comfortable home 28.(do sth.) in surprise 惊讶地 (做…) 29.get something to drink 30.watch one show 31.hang out 32.pass sb. sth. 33.lend sb. sth. 34.get sth. wet 35.hate + (to do/ doing) sth. 36.do chores 37.help sb.(to)do /with sth 38.bring a tent 39.buy some snacks 40.go to the store 41.invite sb. to a party 42.make sb. do sth. 43.enough stress 44.waste of time 45.in order to为了 46.get good grades 47.mind doing sth. 48.depend on 49.develop children 's independence 50.look after/take care of 51.do one’ s part in (doing ) sth. 做某人分内的事 二、重点句型 1. Could you please clean your room? ( Could you please + do sth.?) 2. I have to do some work. 3. Could I use your computer? (Could +主语+ do sth. ?表情求) 4. She won’ t be happy if she sees t his mess. 5. For one week, she did not do any housework and neither did I. (Neither +be动词/助动词/情态动词+主语.) 6. My mom came over as soon as I sat down in front of the TV. 7. It’s the parents’ job to provide a clean and comfortable environment at home for their children.(it为形式主语,to do不定式是真正的主语,并且后置) 8. I think it’s important for children to learn how to do chores and help their parents with housework. 9. The earlier kids learn to be independent, the better it is for their future. (the+比较级…,the+比较级…句型) 三、单元考点 2.take out带出去;取出,拿出take the rubbish out take out 100yuan take your tickets out 3. make the/ one’s bed整理床铺,make the table收拾桌子,摆放碗筷 5. (at) any minute (now)很快,马上Mother will be back any minute now. Hurry up! The train is leaving at any minute. 6. mess 【名词】不整洁,杂乱(不堪) be in a mess乱七八糟,杂乱不堪 0. reply回答,回复【不及物动词】reply to sb./sth. ,reply to your letter reply in writing 13. pass sb. sth.= pass sth. to sb.把某物递给/传给某人,请把盐递给我。= 15. while 当……时候;在……期间,引导时间状语从句,表“一段时间”,从句的谓语动词用延续性动词,且常 用进行时态,如The telephone rang while father was reading a newspaper. Could you please look after the kid while I do shopping? When引导时间状语从句是,可以表示“一段时间”和“某一时刻”,所以从句的谓语动词延续性动词和短暂性动词皆可。When I arrive in Beijing, it’s raining heavily.
第一单元测试 (总分100分,用时60分钟)Ⅰ.单项选择(每小题1分,共15分) 1.It ______sunny today,but it ______ cloudy yesterday. A.is;is B.was;was C.is;was D.was;is 2.I ______ at school now,but I ______ at home an hour ago. A.am;am B.was;was C.am;were D.am;was 3.—______ there any students in the classroom? —No,there aren't.But there ______ some half an hour ago. A.Are;were B.Were;are C.Are;are D.Were;were 4.—Where ______ you last night? —I ______ at home. A.are;am B.am;am C.were;was D.were;were 5.—______ Nancy at home last weekend? —No,she ______.She was in the library with her friends. A.Is;isn't B.Was;wasn't C.Did;didn't D.Was;isn't 6.—______ did you ______ for dinner? —Sichuan food. A.What;have B.When;had C.Why;have D.How;have 7.This movie is kind of boring.I don't really ______ it. A.see B.look C.enjoy D.want 8.I didn't go to the beach ______ vacation.I stayed ______ home. A.for;in B.on;at C.on;in D.in;at 9.—Could you give me ______ money? —Sorry.I don't have ______ with me. A.some;any B.little;some
Unit three: Could you please clean your room 1.——Lisa,we need to clean the you _____ the rubbish after off place out 't ____ the bus until it arrives at the bus stop. up off up up you ________ watch TVI 'm sleeping. don 't 't please please not is some rubbish in the _______ . it out out it them out out them math teacher gave us some exercises and asked us ________ work them on them on work on them on them has to _____ the bed for her son every morning. 7.——Could I use your car ——Sorry, will use it in a while 't 't 8.——Could you please do the dishes ——_____ ,I could ,I can't , I couldn 't is no need for us _____ it today. finish doing finishing order ___ you,they arrived at the bus stop at 7:00 am. meeting meet 11.——Could you please take out the rubbish ——______ I'm doing my homework. ,I can't ,I couldn 't ,you can you please _____ the children ______ with snakes ask;not to play ;not to play ;not play ;don t'play keep the door _____ b ecause it was cold outside close boxes are too you need ________ h elp from us friends when you are in trouble. on on depend on 16.——Could you please not keep the water running . I'm turning off the shower. ,I will ,I will 'sall right ,I won 't 17.——Excuse me,could I take this seat——Sorry, _____ . you are it 's taken mind ,what 's that in your handPlease ______ . it out out it your hand your hand out didn 'tgo to the park yesterday and _______ . do I I do did I I did should help her while your mother ______ the housework on weekends girl isn 't _______ asking others for help.
Unit1 Where did you go on vacation? 一、书本重要语法点梳理 go on vacation去度假stay at home待在家里 go to the mountains去爬山go to the beach去海滩 visit museums 参观博物馆go to summer camp去参观夏令营quite a few相当多study for为……而学习 go out出去most of the time大部分时间taste good尝起来很好吃have a good time玩得高兴 of course当然feel like给……的感觉;感到go shopping去购物in the past在过去 walk around四处走走because of因为 one bowl of…一碗……the next day第二天 drink tea喝茶find out找出;查明 go on继续take photos照相something important重要的事up and down上上下下come up出来buy sth. for sb. / buy sb. sth. taste + adj. 尝起来……look+adj. 看起来……nothing…but+动词原形除了……之外什么都没有 seem+(to be)+ adj. 看起来…… decide to do sth.决定去做某事stop doing sth. 停止做某事 try doing sth.尝试做某事try to do sth.尽力去做某事forget doing sth.忘记做过某事forget to do sth.忘记做某事enjoy doing sth.喜欢做某事want to do sth.想去做某事start doing sth.开始做某事start to do sth. dislike doing sth. 不喜欢做某事keep doing sth.继续做某事Why not do. sth.?为什么不做……呢? so+adj.+that+从句如此……以至于…… tell sb. (not) to do sth. 告诉某人(不要)做某事 语法:不定代词 1)something,anything,nothing,everything是指物的不定代词。somebody,someone,anybody,anyone,nobody,everybody,everyone 是指人的不定代词。somewhere,anywhere,nowhere,everywhere 是指地点的不定代词。 2)当形容词修饰something, anything, nothing, everything等不定代词时,放在这些词的后面; 3)这些不定代词做主语时,谓语动词用第三人称单数。如:Is everybody here? 大家都到齐了吗?
八年级上册英语第一单元测试题 班级姓名得分 一,单项选择。(30分) ( ) 1, --- Where she on vacation? --- She visited her uncle. A, did, go B, does, go C, does, went D, did , went ( ) 2, --- When you the car? --- Last August. A, do, buy B, did, bought C, did, buy D, do bought ( ) 3, --- How was your weekend, Mingming? --- A, I don’t like it B, Yes, it’s OK. C, It was great! D, Well ( ) 4, --- Do you have to say for yourself? --- No, I have to say. A,something,anythingB,anything,nothingC,everything.Nothing D,No,some ( ) 5, --- Would you like to eat? ---- Thanks, please. A, something B, anything C, nothing D,everything ( ) 6, Paul and I tennis yesterday. He did better than I. A, were played B, played C, are playing D,play ( ) 7,--- What did Mr. Smith do before he came to China? --- He in a car factory. A, worked B, works C, is working D, working ( ) 8, He went into his room and to work. A, starts B, started C, startted D,start ( ) 9, My grandma enjoys in the countryside. A, lives B, to live C, living D,lived ( ) 10, The new kind of ring is expensive. I don’t have money. A, too much, much too B, much too, too much C, much too, too many D,too much ,too much ( ) 11 --,- Don’t forget your homework, John?, --- OK, I’ll do it right now. A, doing B, to do C, do D, does ( ) 12, are good friends. A, You and I B, I with you C, I and you D,You and me ( ) 13, --- Jack, could you help me when the plane will take off(起飞) on the Internet? --- I’m sorry, my computer doesn’t work. A, get out B, look out C, find out D,find ( ) 14, There is food in the fridge. I want to buy some in the supermarket. A, a little B, little C. few D,a few
2019-2020学年人教版英语八年级下册 Unit 3 Could you please clean your room? 责任编辑:学生姓名:过关同学 https://www.wendangku.net/doc/c25119181.html,eful expressions 1.do/wash the dishes刷盘子,洗碗 2.take out the trash扔垃圾 3. fold the clothes叠衣服 4.sweep the floor扫地 5. make the bed 整理床铺 6. clean the living room 打扫起居室 7.get a ride搭便车8. work on the computer电脑上工作 9. help out with a few things帮助分担一些事情10. see this mess看这么乱 11.do chores 做家务12.throw down 扔下 13.take the dog for a walk遛狗14.reply angrily生气地回答 15. all the time 一直16. help out around the house帮忙做家务17.shout back喊回来18.in surprise惊讶地 19. as soon as一...就20.pass sb sth=pass sth to sb把某物递给某人21.lend sb sth=lend sth to sb把某物借给某人22. get sth wet使某物变湿 23.hate to do sth/doing sth憎恨做某事24.drinks and snacks 喝的和吃的 25. borrow sth from sb从某人处借来某物26. invite sb to a party 邀请某人参加聚会27.have stress有压力28.a waste of time时间的浪费 29.spend time on sth在某物上花费时间30.in order to为了 31.get into a good university 上好大学32.There is no need for sb to do sth 对某人而言没有必要做某事 33.It’s one’s job to do sth 做某事是某人的职责34.provide sb with sth=provide sth for sb 提供给某人某物35. mind doing sth介意某人做某事36. learn how to do chores学习如何做家务37.It’s not enough to do sth 做某事是不够的38. depend on sb/sth too much 依靠某人太多39.develop one’s independence培养某人的独立性40.look after oneself=take care of oneself照顾某人自己41. understand the idea of fairness 理解公平的想法42.do one’s part in doing sth尽职尽责做某呈43.as a result结果是44.fall ill 生病 II.sentences 1.---Could I go out for dinner with my friends?---Sure,that should be OK.
人教版初二英语下学期第一单元测试题(含答案) 人教版初二英语下学期第一单元测试题 一(根据汉语提示及句意,写出单词或词组(10分) 1. Today I’m very busy, but she is ___________(空闲的). 2. They are studying for a _______________(化学考试). 3. I got his ____________(邀请) but I can’t go. 4. I have ___________(太多的) homework to do. 5. Mr King sometimes goes to the _________(音乐会). 6. He _________(必须) stay in bed today because he hurt. his leg. 7. I am going to have my piano lesson _______(后天). 8. Would you like to ___________(打网球) with us? 9. Next week my friend is _______(拜访) my home. 10. On Sunday I’m going fishing with my uncle _________(全天). 二(单项选择题(15分) 1. -Can you come to play soccer with me? ----______. A. I can B. That’s all right C. Sure. I’d love to D. No 2. He can go with you, but I ________. A. am not B. c an’t C. don’t D. not 3. What are you doing ______ Monday morning? A. on B. at C. in D. to 4. Thanks for _______ me to the party. A. ask B. asking C. asks D. to ask
郑宏家教班之英语篇 Unit 3 Could you please clean your room? 一、重点短语 1. go out for dinner 19. come over (to+地点) 36. do chores 2. stay out late 20. take sb. for a walk 37. help sb.(to)do /with sth 3. go to the movies 21. all the time 38. bring a tent 4. get a ride 22. all day/evening 39. buy some snacks 5. work on sth. 23. do housework 40. go to the store 6. finish doing sth. 24. shout back 大声回应41. invite sb. to a party 7. clean and tidy 25. walk away 42. make sb. do sth. 8. do the dishes 26. share the housework 43. enough stress 9. take out the rubbish 27. a comfortable home 44. waste of time 10. fold your/the clothes 28. (do sth.) in surprise 惊讶地45. in order to 为了 11. sweep the floor (做…) 46. get good grades 12. make your/the bed 29. get something to drink 47. mind doing sth. 13. clean the living room 30. watch one show 48. depend on 14. No problem 31. hang out 49. develop children 's 15. welcome sb. 32. pass sb. sth. independence 16. come home from school/ work 33. lend sb. sth. 50. look after/take care of 17. throw down 34. get sth. wet 51. do one’ s part in (doing ) sth. 18. throw away 35. hate + (to do/ doing) sth. 做某人分内的事 二、重点句型 1.Could you please clean your room? ( Could you please + do sth.?) 2.I have to do some work. 3.Could I use your computer? (Could +主语+ do sth. ?表情求) 4.She won’ t be happy if she sees this mess. 5.For one week, she did not do any housework and neither did I. (Neither +be 动词/助动词/情态动词+主语.) 6.My mom came over as soon as I sat down in front of the TV. 7.It’s the parents’ job to provide a clean and comfortable environment at home for their children.(it 为形式主语,to do 不定式是真正的主语,并且后置) 8.I think it’s important for children to learn how to do chores and help their parents with housework. 9.The earlier kids learn to be independent, the better it is for their future. (the+比较级…,the+比较级…句型) 三、单元考点 2.take out 带出去;取出,拿出take the rubbish out take out 100yuan take your tickets out 3.make the/ one’s bed整理床铺,make the table 收拾桌子,摆放碗筷 5.(at) any minute (now)很快,马上Mother will be back any minute now. Hurry up! The train is leaving at any minute. 6.mess 【名词】不整洁,杂乱(不堪) be in a mess 乱七八糟,杂乱不堪 0. reply 回答,回复【不及物动词】reply to sb./sth. ,reply to your letter reply in writing 13. pass sb. sth.= pass sth. to sb.把某物递给/传给某人,请把盐递给我。= 15. while 当……时候;在……期间,引导时间状语从句,表“一段时间”,从句的谓语动词用延续性动词,且 常用进行时态,如The telephone rang while father was reading a newspaper. Could you please look after the kid while I do shopping? When 引导时间状语从句是,可以表示“一段时间”和“某一时刻”,所以从句的谓语动词延续性动词和短暂性动词皆可。When I arrive in Beijing, it’s raining heavily.
第一单元 1. 多久一次hoe long a time 2. 在周末on the weekend 3. 去看电影go to the movie 4. 去滑Go skateboarding 5. 看电视Watch TV 6. do exercise 做练习 8. 去购物go shopping 9. hardly ever很少,难得10. sometimes 有时 11. always 总是12. usually通常 13. often经常14. never从不 15. once a week每周一次16. twice a month每月两次 17. three times a year 每年三次18. surf the Internet上网19. your favorite program你最喜欢的节目20. Animal World 动物世界 21. play soccer踢足球22. do homework做作业 23. every day 每天24. once or twice a week 每周一两次25. three or four times a week 每周三四次 27. all students 所有的学生 28. most students 大多数学生29. some students 一些学生30. no students 没有学生31. the result of a survey 调查结果32. as for 至于33. the result for "watch TV""看电视"的调查结果 34. improve your English 提高你的英语
Unit 1 Will people have robots? 测试 人民教育出版社 Ⅰ. Vocabulary Choose the phrases to fill in the blanks, according to the sentences. A:What do you think our city will be like________/________/________/________/________? B:There will be________/________/________/________. Ⅱ.Choose the correct answers. ( ) 1.I think kids will study at home on computers ten years. A.at B.for C.after D.in ( ) 2.Hurry up! The train in two minutes. A.go B.went C.will go D.goes ( ) 3.My father was than he is now. A.thinner B.thin C.less D.few ( ) 4.The boy off the bike and hurt his leg yesterday. A.fall B.fell C.falls D.will fall ( ) 5.I have homework to do than you. A.much less B.much C.very little D.fewer ( ) 6.Do you like playing football or playing violin?
人教版八年级下册英语第三单元知识点总结 短语归纳(学生必背内容) 1.do the dishes 洗餐具 2.take out the rubbish 倒垃圾 3.fold the clothes 叠衣服 4.sweep the floor 扫地 5.make the bed 铺床 6.work on从事;创作 7.clean the living room 打扫起居室 8.go out 出去 9.stay out 待在外面;不在家 10.help out 帮助做完某事 11.in front of在....前面 https://www.wendangku.net/doc/c25119181.html,e over 过来;顺便来访 13.hang out 闲逛 14.do chores 做家务 15.at least 至少 16.throw down 扔下 17.all the time 频繁;反复 18.in surprise 吃惊地; 惊讶地 19.as soon as.....就.... 20.a waste of time 浪费时间 21.spend...on...在...上.费(时间或金钱) 22.in order to 目的是; 为了 23.depend on 依靠;信赖 24.look after 照顾; 照料 25.keep it clean and tidy 保持它干净、整洁 26.get into 进入 27.take care of 照顾; 处理 28.as a result 结果 29.fall ill 生病 30.get a ride 搭车 用法归纳 1.finish doing sth.做完某事 例句展示:I finished reading this book yesterday.昨天我读完了这本书。 2.Neither+连系动词be/助动词/情态动词+主语.....也不 例句展示 ①--He isn’t a student.他不是一个学生。 ---Neither am I.我也不是。 ②---He didn’t go to work yesterday.他昨天没去工作。 -----Neither did I.我也没去。 ③---He can’t sing the song.他不会唱这首歌。 ----Neither can Dale.戴尔也不会唱。 考点测试: 3.as...as...与.....一样..... 例句展示:He is as tall as me.他和我一样高。 4.want sb.to do sth.想要某人做某事 例句展示:She wants me to clean the living room.他想要我打扫起居室。 5.try (not) to do sth.尽力(不)做某事 例句展示:He tries to learn Enlish well because it is very useful He tries not to be late for class.他尽力不迟到。 6.hate to do sth.厌恶做某事 例句展示:Dale hates to stay out.他讨厌待在外面。 7.make sb.do sth.让/使某人做某事 例句展示:He makes me do more chores.他让我做很多家务。 8.let sb.do sth.让某人做某事 例句展示:He lets me wait for me a long time.他让我等了很长一段时间。9.spend...doing sth.花费....做某事 例句展示:He spends two hours doing his homework.他花费两个小时做家庭作业。 10.provide sth.for sb.向某人提供某物 例句展示:He provides a book for me.他给了我一本书。 11.mind doing sth.介意做某事 例句展示:Do you mind my opening the window?你介意我打开窗户吗?12.learn to do sth.学会做某事 例句展示:Little Tom learns to make the bed.小汤姆学会了铺床。 13.learn how to do sth.学会怎样做某事 例句展示:Dale has learned how to learn English well.戴尔学会了怎样学好英语。 14.the+ 比较级..,the+ 比较级... 越....就越.... 例句展示:The more we do for the people,the happier we will be. 我们给人们帮助越多,我们就越开心。 15.do one's part in (doing )sth.尽自己的职责做某事