Unit 1 第3课时 Grammar-2022-2023学年八年级英语下册课后培优分级练（牛津译林版）.docx

1、Unit1 Past and present第3课时Grammar课下注释小练单词检测1. _ adv.还，仍然2. _adv.近来3. _ adj.过去的短语自测1. _中国历史 2. _ 在上个世纪3. _ 很多年重点句子1、这是关于过去一个世纪北京的变化。_2、你最近看过电影吗？_3、约翰从未去过中国。_答案自查单词: 1.yet2.recently3.past短语：1.the history of China2.over the past century3.for years句子：1.Its about the changes in Beijing over the past cent

2、ury.2.Have you seen any films recently?3.John has never visited China.课后培优练级练培优第一阶基础过关练一、 根据句意和所给汉语完成下列单词。1. Have you read any books _(最近)? 2.There have been over 30,000 people in the town over the _(过去的)century.3. Daniel hasnt finished his homework_(还).4. -Have you _（曾经） eaten chocolate? -No.5.My m

3、other has _(从来没有)been to the Great Wall. We will go there this summer.6.Many young people like to get _(结婚)during Spring Festival.7.This report will tell you _(变化)in our town over the past few years.8.In the past some people put the _(废物) into the rivers and lakes.9.-Dont you think it _(不可能) to fini

4、sh the work in an hour? -Yes, we need more time.10.I am not good at English. Can you help me _(提高）it?二、用所给单词适当形式填空。11. Millie_(live)with her parents in Nanjing since they came here in 2012.12.I_(watch) a football game on TV last night.13.-Gao Taos new book about his stories with his son _(come)out .

5、-Really? Why not go to the bookshop and buy one right now?14. Look! Who _(ride) a bike over there?15.Its too late at night, but Jims father_(not come) back from work yet.16.China_(send)up several Shenzhou manned spacecraft into space since 2003.17.-I cant find the new road on my mobile phone. Are yo

6、u sure youve got the name right?-Yes.But _ you _(download) the latest map?18._ you_(see) my dictionary anywhere? I cant find it now.19.Andy_(clean)his fathers car when I saw him yesterday.20.They_(work) in this factory for twenty years.三、单项选择( )21.Im not hungry because I have _ had lunch.A. ever B.

7、never C. just D. still ( )22.Do you know Hong Kong has been back to our country, China_1997?A. in B. from C. since D. for ( )23.-The storybook is very interesting.-I agree with you. I _ it twice already.A. read B. will read C.am reading D. have read ( )24._ you ever _ the new museum?-No, I havent.A.

8、Do; visit B.Have; visited C.Did; visit D.Are; visiting ( )25.-Judys never been late for school,_ she?-_.She is always the first to get to school every morning.A.is; Yes B.has; No C.isnt; Yes D.hasnt; No( )26.-Have you returned the book The Little Prince to the library_?-Yes.I have _ returned it.A. y

9、et ,yet B.already ,already C.already;yet D. yet; already ( )27.-Do you know our town at all? -No, this is the first time I _ here.A. was B. have been C. came D. am coming ( )28.-The Amazing Spider-Man 2 is on these days. Its fantastic.-Really? But I_ it yet.A. didnt seen B. wont see C. havent seen D

10、. am not seeing ( )29.-Look! How clean the classroom is!-Yes, Im sure someone _it up.A. cleans B. is cleaning C, will clean D. has cleaned ( )30.-They havent paid for their tickets, have they?-_.They didnt pay any money.A. Yes, they have B.Yes,they havent C. No, they haventD. No, they have 参考答案1.rec

11、ently2.past3.yet4.ever5.never6.married7.changes8.waste9.impossible10.improve11.has lived12.watched13.has come14.is riding15.hasnt come16.has sent17.have, downloaded18.Have, seen19.was cleaning20.have worked21.C22.C23.D24.B25.B26.D27.B28.C29.D30.C【解析】21.C句意：我不饿因为我刚刚吃过午饭前句中not hungry，应是刚吃过饭四个副词的含义是eve

12、r曾经；never从来不；just刚刚；still仍旧通过比较just符合句意和逻辑关系故选C。22.C句意：你知道香港从1997年起就回到了我们的祖国中国吗？本题考查现在完成时和介词的搭配，in+一段时间,表将来，for+一段时间,表达,和现在完成时连用，since+过去的某个时间点,表自从之意,和现在完成时连用，题眼上1997是过去的时间，故选C。23.D句意：-这本故事书很有趣。-我同意你的看法。我已经读了两遍了。根据twice和already，结合语境我已经看过两遍了在这里强调对于现在的影响，所以本句应该用现在完成时现在完成时的构成是：主语+have/has+动词的过去分词；主语是I，

13、助动词用have，故选D。24.B句意：-你参观过这个新博物馆吗？-不，没有。本题考查考查时态，visit参观。由答句No，Ihavent可知问句是使用疑问词have进行提问的完成时态，have ever visited表示已经参观过，因此使用助动词have引导一般疑问句。故选B。25.B句意：-朱迪上学从来没有迟到过，_她？-_她每天早上总是第一个到学校。根据Judys never been late for school，_ she？可知这里考查了反义疑问句，前面陈述句部分用了never，它是一个否定词，所以后边用肯定形式。含有助动词has 的句子，它的反义疑问句还应该用has来引导；回答

14、No，是英语的习惯，意思是No，shes never been late for school而汉语则理解成：你说得对。故选B。26.D句意：-你把书还给图书馆了吗？-是的。我已经还了。yet常用于现在完成时的否定或疑问句中, already用于肯定句中。结合语境可知选D。27.B句意：-你竟然知道我们小镇吗？-不知道，这是我第一次来这里。根据固定句型It/This is the first/second/third time that 主语 + has/have been。此处应选用现在完成时。故选B。28.C句意：神奇蜘蛛侠2最近正在上映。太棒了。 -真的吗？但我还没看到。美国蜘蛛侠第二部

15、这些日子一直在上映，但“我”一直没有看。yet 提示用现在完成时否定式，故句子应该使用haventseen。故选C。29.D句意：-看！这个教室真干净啊！-是的。肯定有人已经打扫干净了。根据Howcleantheclassroomis，可知现在的影响结果是教室很干净，所以是有人已经打扫过了，强调对现在的影响，用现在完成时（have/has+动词的过去分词）主语someone为 不定代词，作主语时，谓语动词用三单形式，故用has故选D。30.C句意：-他们没有支付车票钱，是吗？ -是的，他们没有付任何钱。本题考查对反意疑问句的回答。分析题干可以看出这个句子是“前否后肯”形式，回答yes或no与汉

16、语正好相反。这种省略回答的yes要译成“不”，no要译成“是”。此处的事实是否定的，故要用No，而不是Yes。故选C。培优第二阶拓展培优练四、 完形填空阅读下面短文，从短文后所给各题的四个选项（A、B、C、D）中，选出可以填入空白处的最佳选项。One day Jack was happily trying his new car.Suddenly，a flower shop _31_his attention.He stopped the car and took a closer look_32_the flowers.The beautiful Mothers Day card attac

17、hed （系.上） to the flowers reminded him it was Mothers Day.Jack thought of his loving _33_ who lived two hundred miles away.So he_34_ a nice bouquet （束） of pink roses，signed the card and _35_the shopkeeper to send it to his mother by express（快递）.Just before he got into his car，he noticed a girl_36_ th

18、e money in her hand outside the shop.She seemed a little _37_.Jack asked， Can I help you？ She looked up at him and replied in a _38_ voice， I want to buy some _39_ for my mother，but I dont have enough money.Jack asked her to go to the shop with him and _40_ a big bouquet of red roses for her.She was

19、 quite surprised and _41_ him with tears in her eyes.While leaving the shop，Jack offered her a _42_.The girl was pleased and her eyes were shining with_43_.On the way，she told him that her mother was dead.So _44_ they arrived，she ran to her mothers grave（坟墓） and placed the bouquet there.Jack was sil

20、ent for a minute.Then he decided to drive down to meet his mother.His mother was very happy to see him and the bouquet.She kissed him and asked， Why did you _45_ down all the way？You could have simply sent the bouquet to me. He understood this was a mothers love：mothers think only about their childr

21、ens comforts.( )31.A.caughtB.turnedC.keptD.paid( )32.A.toB.inC.atD.on( )33.A.fatherB.motherC.brotherD.sister( )34.A.discoveredB.soldC.choseD.made( )35.A.forcedB.askedC.encouragedD.invited( )36.A.countingB.touchingC.takingD.wasting( )37.A.happyB.excitedC.angryD.upset( )38.A.pleasedB.surprisingC.lowD.

22、gentle( )39.A.cardsB.candiesC.rosesD.clothes( )40.A.boughtB.lentC.packedD.grew( )41.A.thankedB.praisedC.showedD.understood( )42.A.walkB.presentC.rideD.rest( )43.A.happinessB.sadnessC.weaknessD.kindness( )44.A.whenB.sinceC.beforeD.until( )45.A.breakB.driveC.runD.fly五、 阅读理解,阅读短文，选择最佳答案。Being caught in

23、 a flood is quite dangerous.Like many other natural disasters，floods can happen with little or no warning.Floodwater moves quickly and it is known to pull trees out of the ground，wash away buildings and cause bridges to come down. Of course，drowning（溺死） is a danger during a flood，not only because th

24、ere is so much water and it is moving quickly，but also because of what the water is carrying.Pieces of glass，bricks and metal caught in the moving water can hurt anyone in the floodwater，making it more difficult to swim or walk through water. Moreover，floods can cause power cut，traffic jams and wide

25、 destruction（毁灭）.And the flood itself isnt the only thing to deal with.The thing after the flood can be just as difficult，because it may not be possible to send basic supplies such as food and drinking water to the area. So how to protect ourselves during the flood？Here are some tips for you：.Avoid

26、bridges that cross quicklymoving water，as floodwaters can cause bridges to come down.Listen to the governments radio for further instructions.If you are told to move to a safer place，do so.Stay inside a car trapped by fastmoving water.Only get out if the water begins to flood the car itself，then mov

27、e to the top of the car.Never try to walk，swim or drive through floodwaters.It only takes six inches of moving water to knock a person off their feet.Stay away from _，as they are often knocked down during strong storms and flooding.They can cause water all around to become charged，leading to peoples

28、 death because the power isnt cut off. After the flood，do not drink water or use it to wash dishes，brush teeth.Drink clean，safe water.If you moved from your home，return to it only after the local government have said it is safe to do so.( )46.Where does this passage come from？ A.A guidebook.B.A movi

29、e poster.C.Local newspapers.D.A Biology magazine.( )47.Which of the following doesnt make drowning a great danger during a flood？A.There is so much water.B.The water is moving very fast.C.The floodwater carries pieces of glass，bricks and metal.D.Some of the people are not good at swimming.( )48.Whic

30、h of the following can be put in _？A.fallen treesB.power linesC.hard rocksD.broken houses( )49.What do we know about floods according to the passage？ A.After the flood，it is easy for us to send basic supplies to the area.B.Six inches of floodwater isnt strong enough to knock people down.C.If you are

31、 a good swimmer，you can swim across the floodwater safely.D.Floods can cause a lot of problems not only during the flood but also after the flood.( )50.This passage is written to _.A.tell us what causes the floodB.tell us how dangerous the flood isC.tell us how to prevent floods from happeningD.intr

32、oduce floods danger and tips for protecting ourselves参考答案31.A32.C33.B34.C35.B36.A37.D38.C39.C40.A41.A42.C43.A44.A45.B【解析】31.A考查动词，caught是catch的过去式，这里是吸引的意思；turn 转变；keep保持；pay 付出，catch ones attention吸引某人的注意，一个花店引起了他的注意，故答案为A。32.C考查介词，to到；in在.里；at在；on在.上；结合He stopped the car and took a closer look他停下车

33、走近去看那里摆放的花，look at看，故答案为C。33.B考查名词，father父亲；mother妈妈；brother兄弟；sister姐妹，今天是母亲节，Jack应该是想到了远在200英里地远的母亲而不是别人，故答案为B。34.C考查动词，discover发现；sell卖；choose选择；make制作，所以他选了一束粉色玫瑰，根据语境可知，是在花店选花，故答案为C。45.B考查动词，force强迫；ask请示；encourage鼓励；invite邀请，结合语境可知，是请求寄花而不是其它，签好卡片，请店主把它快递寄给他的母亲，故答案为B。36.A考查动词，count数；touch触碰、感动

34、；take拿；waste浪费，根据下一句the money in her hand 可知，她在数她手里的钱，故答案为A。37.D考查形容词，happy开心的；excited激动；angry生气；upset心烦的，根据下文but I dont have enough money应该是钱不够，心烦，故答案为D。38.C考查形容词，pleased高兴；satisfied满意的；low低的；gentle温和的，女孩说话应该是用低低的声音说，因为后面说钱不够，故答案为C。39.C考查名词，cards卡片；candies糖果；roses玫瑰花；clothes衣服，前面我买玫瑰花给妈妈，提示这里也是买ros

35、es，我想给妈妈买玫瑰花，但是钱不够，故答案为C。40.A考查动词，buy买；lend借；pack包装；grow成长，杰克请她和他一起去花店然后给她买了一大束红玫瑰，故答案为A。41.A考查动词，thank谢谢；praise表扬；show展示；understood理解，为她买花，她当然应该表示感谢，故答案为A。42.C考查名词，walk走；present呈现；ride骑乘；rest休息，离开商店的时候，Jack主动提出捎她一段路。a ride 搭便车，故答案为C。43.A考查名词，happiness快乐；sadness伤心；weakness弱点；kindness仁慈，结合上文可知她高兴，眼里闪

36、着幸福的泪水，故答案为A。44.A考查连词，when当.时，since自从，before在.之前，until直到，结合语境：当他们去里她妈妈的墓地，把花放在那里，when引导的时间状语从句，故答案为A。45.B考查动词，break打坏；drive开车；run跑；fly飞妈妈问儿子：怎么一路开车来了？邮寄一束花给我就行了，故答案为B。46.C47.D48.B49.D50.D解析】46.C.文章出处题。通读全文，可知主要是介绍洪水爆发期间的一些危害以及如何在洪水期间保护自己的一些建议，应该是出自报纸上。故选C。47.D.细节理解题。根据原文Of course，drowning（溺死）is a da

37、nger during a flood.making it more difficult to swim or walk through water.可知，不擅长游泳不会使溺水在洪水期间成为很大的危险。故选D。48.B.细节理解题。根据原文as they are often knocked down during strong storms and flooding.They can cause water all around to becomecharged，leading to peoples death because the power isnt cut off.可知，会导致周围的水

38、充满电，导致人们死亡的应该是电线电线杆。故选B。49.D.细节理解题。根据原文Being caught in a flood is quite dangerous.以及After the flood，do not drink water or use it to wash dishes，brushteeth.可知，洪水不仅在洪水期间，而且在洪水之后也会造成很多问题。故选D。50.D.目的意图题。根据整个文章的理解可知，文章主要是介绍洪水的危险及保护自己的建议。故选D。培优第三阶中考沙场点兵一、 单项选择( )1. How many places have you visited_2003?A.

39、 when B. before C.after D. since ( )2.-How do you like Treasure Island,Lucy?-Its so exciting that I_ it twice.A. am reading B. have read C.was reading D.had read ( )3.-_you ever_ Han Hong sing live?-Of course. A couple of times in different cities.A. Have;seen B.Did; see C.Do;see D.Are;seeing ( )4.A

40、my,you_ _the computer game for 2 hours. Stop,please.A. are playing B. played C. have played D. play ( )5.-Look,the light is still on in Helens office.-Maybe she_her work yet.A. doesnt finish B. wont finish C. hasnt finished D. didnt finish ( )6.-Our hometown _a lot so far. -Yes. I hope it will be ev

41、en_.A.changed;goodB.has changed;betterC. changed;betterD. has changed; well( )7.She has never been to the country before,_?A. has she B. hasnt she C.is she D. isnt she ( )8.-Have you_ finished your Maths homework?-Yes. I_ it a few minutes ago.A. ever;have finished B. yet; have finished C. yet; finis

42、hed D. just now; finished ( )9.My sister _English since she was 9 years old. She can talk to foreigners freely.A. learns B. learnt C.has learnt D. have learnt ( )10.-_ has Linda taught English in this school?-Since two months ago.A. How soon B. How often C.How far D. How long 二、阅读下面短文，从短文后所给的选项中选出能填

43、入短文空白处的最佳选项，使短文通顺连贯，其中有一项是多余的。While most people are learning to sort rubbish，a student in Hangzhou does something more than that he designed a smart bin by himself. Jiang Haotian is a ninth grader.His smart bin includes two small bins，each with a cover on the top to open or close._11_For example，whe

44、n people say recyclable waste （可回收垃圾）orunrecyclable waste，the correct one out of the two small bin will open.You think thats all the bin can do？Youre wrong.When its full of rubbish，the bin will not open.In this way，it wont smell terrible like the old ones on the streets._12_It helps stop fires，Jiang

45、 says. Jiang thought of the idea of making a smart bin to sort rubbish when he was in Grade 5.One day he helped take out the rubbish and a dustman told him not to mix all kinds of rubbish together._13_ To make the dustbin perfect Jiang wrote lots of codes（代码）.And he asked some people for help. _14_H

46、e is happy that the dustman likes it，and is proud（骄傲的） that he can do something for the environment.He hopes more people can join him and make the earth cleaner.A.The bin can do as people tell it to.B.He is afraid that his parents dont support him.C.After two years of hard work，he finally completed

47、his design.D.Thats when he decided to learn to program （编程） and design the dustbin.E.Also，the bin will make a loud sound if someone throws burning things into it.三、短文填空请认真阅读下面短文，并根据各题所给首字母的提示，写出一个合适的英语单词完整、正确的形式，使短文通顺。Why does your dog shake when its all wet？It isnt just trying to g_15_you and your

48、homework wet.There is a good reason f_16_the shaking.Scientists took a look at the strange problem and r_17_ the shaking of 33 animals，including five types of dogs.Theyve found that mammals（哺乳动物） save lots of energy by shaking to dry t_18_ off.If they dont shake，animals will use up to 20 percent of

49、their d_19_ energy.Nearly all furry（多毛的） mammals do it in t_20_same way.But some mammals，like kangaroos，only shake part of their body，as they live in very hot weather and that makes them s_21_dry easily. Not every animal shake at the same rate（频率）.Small animals seem to shake f_22_.A mouse shakes 30

50、times per second，while bears，tigers and big dogs shake only about four. These animals do it so well that they shake off about 70 percent of the water on t_23_bodies in seconds.However，for us humans，it takes us not seconds，but m_24_!参考答案1.D2.B3.A4.C5.C 6.B 7.A8.C9.C10.D【解析】1.D句意：自从2003年以来，你参观过多少地方 ?A

51、.when 在.时 B.before在.之前 C.after在.之后D.since自从; 自从.之后;此题的谓语动词用的是现在完成态，在四个答案中，只有since与现在完成时态连用，故D。2.B句意：-Lucy，你觉得金银岛怎么样？-很刺激，我已经读过两遍了。根据设空处后面的twice，结合语境我看过两遍了。强调对于现在的影响，判断用现在完成时，现在完成时的构成是：主语+have/has+动词的过去分词；主语是I，助动词用have，故选B。3.A句意：-你听过韩红现场演唱吗？-当然。几次在不同的城市。看韩红的现场演唱会发生在过去C，D错ever常和现在完成时（动作发生在过去，但对现在有一定的影

52、响）连用，现在完成时态的构成是；have（has）+过去分词（done），故选A。4.C句意：约翰，你已经玩电脑游戏两个小时了。请停下来。本题的题眼是for 2 hours确定是现在完成进行时，表示在说话时刻之前到现在正在进行的动作。故选C。5.C句意：-看，Helen的办公室的灯还在亮着。-可能她还没有完成她的工作。结合语境及是时间副词yet已经，可知下文描述的是从过去一直持续到现在并将继续下去的动作，现在完成时的结构：主语+have/has+过去分词+其它；由题意可知此句用否定 故用现在完成时态hasntfinished选C。6.B句意：-到目前为止，我们的家乡发生了很大变化。-是的。我希

53、望会更好。第一空根据句中的so far可知句子是现在完成时，指的是:迄今为止我们的家乡变化很大。第二空根据句意“我希望它变得更加好”可知，此空要填入比较级。故选B。7.A句意：她以前从未去过这个国家，是吗？本题考查对反意疑问句的回答。分析题干可以看出这个句子是“前否后肯”形式，前面助动词是has，故选A。8.C句意：-你已经完成你的数学作业了？-是的。几分钟前我做完了。yet 已经，还，常用于完成时态否定句或疑问句；ever，曾经，用于现在完成时，just now是一般过去时态的标志，所以第一空填yet，第二空中a few minutes ago是一般过去时的时间状语，故选C。9.C句意：我的

54、姐姐自从她九岁的时候就已经学英语了。她能自如地跟外国人交谈。根据since she was 9 years old可知用现在完成时，其结构为has/have+动词的过去分词，主语my sister为单数，故用has，故选C。10.D句意：-_琳达在这所学校教过英语吗？ -从两个月前开始。本题考查特殊疑问词，A多久,B.多久一次,C.多远，D.多长时间,since two months ago相当于for two months ，提问用疑问词how long,故选D。11.A12.E13.D14.C【解析】11.A.根据下文For example，when people say recyclab

55、le waste （可回收垃圾）orunrecyclable waste，the correct one out of the two small bin will open.（例如，当人们说可回收垃圾或不可回收垃圾时，两个小垃圾桶中正确的一个会打开。）可知说的是当人们说可回收垃圾或不可回收垃圾时，两个小垃圾桶中正确的一个会打开，结合选项，应说垃圾箱可以按照人们的要求去做。故选A。12.E.根据下文It helps stop fires（它有助于防火。）可知说的是它有助于防火，结合选项，应说此外，如果有人把燃烧的东西扔进垃圾箱，垃圾箱会发出很大的声音。故选E。13.D.根据下文To make

56、the dustbin perfect Jiang wrote lots of codes（代码）.And he asked some people for help.（为了让垃圾箱变得完美，江写了很多代码，他向一些人寻求帮助。）可知说的是为了让垃圾箱变得完美，江写了很多代码，结合选项，应说就在那时，他决定学习编程设计垃圾箱。故选D。14.C.根据上文To make the dustbin perfect Jiang wrote lots of codes（代码）.And he asked some people for help.（为了让垃圾箱变得完美，江写了很多代码，他向一些人寻求帮助。）

57、和下文He is happy that the dustman likes it，and is proud（骄傲的） that he can do something forth environment.（他很高兴清洁工喜欢它，并为此感到自豪他能为环境做点什么。）可知说的是江设计的垃圾箱对拥有良好的环境起到了良好的作用，结合选项，应说经过两年的努力，他终于完成了他的设计。故选C。15.get16.for17.recorded18.themselves19.daily20.the21.stay22.fast23.their24.minutes【解析】15.get考查动词不定式。句意：这不仅仅是想

58、把你和你的作业弄湿。由空前 trying 可知，try to do sth.试着做某事，此处应填动词不定式to get符合题意，空格前有to,故填get。16.for考查介词。句意：摆动是有充分理由的。上文提问狗狗身上湿了为什么会摆动身体，故可推测对于摆动原因，此处应填for对于符合题意，故填for。17.recorded考查动词。句意：科学家们研究了这个奇怪的问题，并记录了33只动物的摇晃，其中包括五种狗。故由并列连词and可知，连接前后动作，前一个动作took用过去式，此处应填动词record的过去式recorded符合题意，填recorded。18.themselves考查代词。句意：他

59、们发现哺乳动物通过摆动身体使自己变干来节省大量的能量。由空前dry和空后off可知，dry off 弄干，动副词短语带宾语，若宾语是代词放在中间，应用宾格形式，此处应填they的宾格形式的反身代词themselves它们自己符合题意，故填themselves。19.daily考查形容词。句意：如果不摇晃，动物将消耗其每日能量的20%。由空前的形容词性物主代词 their 以及空后名词energy可知，此处应填名词day的形容词形式daily每日的符合题意，故填daily。20.the考查冠词。句意：几乎所有毛茸茸的哺乳动物都是这样做的。由空后形容词same可知，in the same way用

60、同样的方法，此处应填定冠词the符合题意，故填the。21.stay考查动词。句意：因为它们生活在非常炎热的天气里，所以很容易保持干燥。由空前的makes them 可知，make sb.do sth.使某人做某事，此处应填动词原形stay符合题意，故填stay。22.fast考查副词。句意：小动物似乎抖动得很快。由空前动词 shake 可知，应用副词修饰动词shake，此处应填副词fast快地符合题意，故填fast。23.their考查代词。句意：这些动物做得非常好，它们在几秒钟内就把身体上70%的水分抖掉了。由空后名词bodies可知，此处应填they的形容词性物主代词their它们的符合题意，故填their。24.minutes考查名词。句意：这不是几秒钟，而是几分钟！由空前 not seconds，but. 可知，此处应填minute的复数minutes符合题意，故填minutes。