初中英语语法现在完成时专项练习
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初一英语现在完成时练习题40题(答案解析)1. I ______ already ______ my homework.A. have finishB. has finishedC. have finishedD. had finished答案解析:C。
本题考查现在完成时的基本结构。
现在完成时的构成是“have/has + 过去分词”。
主语I是第一人称,所以要用have,finish的过去分词是finished,A选项中finish形式错误,B选项has 用于第三人称单数,D选项had finished是过去完成时,不符合题意。
2. She ______ to Beijing three times.A. has beenB. have beenC. has goneD. have gone答案解析:A。
这里考查现在完成时中have/has been和have/has gone的区别。
have/has been表示去过某地( 已经回来),have/has gone 表示去了某地 还没回来)。
句中说她去过北京三次,是去过已经回来的经历,主语she是第三人称单数,所以用has been,B和D选项中have形式错误,C选项has gone不符合题意。
3. They ______ a lot of English words so far.A. learnB. learnedC. have learnedD. will learn答案解析:C。
so far是现在完成时的标志词,表示到目前为止。
现在完成时结构为“have/has + 过去分词”,主语they是复数,所以用have,learn的过去分词是learned,A选项是一般现在时,B选项是一般过去时,D选项是一般将来时,都不符合题意。
4. -______ you ______ your lunch? -Yes, I have.A. Have hadB. Has hadC. Did haveD. Do have答案解析:A。
七年级英语现在完成时肯定句练习题50题1. I ______ my homework already.A.have doneB.has doneC.have doD.done答案解析:A。
现在完成时的构成是have/has+过去分词。
I 作主语,用have,done 是do 的过去分词。
B 选项has 用于第三人称单数主语。
C 选项have 后面应该接过去分词done 而不是do。
D 选项缺少have/has。
2. She ______ a letter to her friend.A.have writtenB.has writeC.has writtenD.write答案解析:C。
She 是第三人称单数主语,用has。
written 是write 的过去分词。
A 选项have 不能与第三人称单数主语she 搭配。
B 选项has 后面应该接过去分词written 而不是write。
D 选项write 是一般现在时,不符合题目要求。
3. We ______ breakfast.A.have hadB.has hadC.have haveD.had答案解析:A。
We 作主语,用have。
had 是have 的过去分词。
B 选项has 用于第三人称单数主语。
C 选项have 后面不能再接have。
D 选项had 是一般过去时,不符合题目要求。
4. They ______ the room.A.have cleanedB.has cleanedC.have cleanD.cleaned答案解析:A。
They 作主语,用have。
cleaned 是clean 的过去分词。
B 选项has 用于第三人称单数主语。
C 选项have 后面应该接过去分词cleaned 而不是clean。
D 选项cleaned 是一般过去时,不符合题目要求。
5. He ______ a book.A.have readB.has readC.have readsD.read答案解析:B。
初二英语现在完成时since、for 用法单选题30 题1. My sister has studied English ______ five years.A. sinceB. forC. inD. at答案:B。
解析:for后面接一段时间,表示动作持续了多久,这里说姐姐学英语持续了五年,所以用for。
since后面接时间点,如since 2010,这里不是时间点,所以A错误。
in和at不能用于现在完成时表示动作持续的时间,C和D错误。
2. Tom has lived in this city ______ he was born.A. forB. sinceC. whenD. as答案:B。
解析:since后面接时间点,表示自从某个时间点开始,这里说自从他出生就住在这个城市,是时间点,所以用since。
for后面接一段时间,这里不是一段时间,A错误。
when和as没有这种用于现在完成时表示从某个时间开始的用法,C和D错误。
3. They have been friends ______ three months ago.A. sinceB. forC. fromD. after答案:A。
解析:since后面接时间点,three months ago是一个时间点,表示自从三个月前他们就是朋友了。
for后面接一段时间,这里不是一段时间,B错误。
from没有这种用于现在完成时表示从某个时间开始的用法,C错误。
after表示在之后,不符合句子语境,D错误。
4. We have known each other ______ a long time.A. sinceB. forC. inD. during答案:B。
解析:for后面接一段时间,a long time是一段时间,表示我们认识彼此很长时间了。
since后面接时间点,这里不是时间点,A错误。
in和during不能用于现在完成时表示动作持续的时间,C和D错误。
现在完成时(单选题 30题含解析)初中英语专题练习一、单选题(共30题)1.—Where is your father, Tom?—He ________ the supermarket.A.has been to B.has gone to C.was going to D.have gone to 2.—I’m sorry for being late.—Never mind. The meeting ________ for only 5 minutes. This way, please.A.has started B.has been over C.has ended D.has been on3.The books ________for two weeks.A.may be kept B.may keep C.borrow D.are borrowed4.—Dad, I couldn’t turn on my computer yesterday but I have to use it today.—Oh, I ________ it. You can work on it now.A.will fix B.am fixing C.fixed D.have fixed5.In the sentence “I have bought a new bicycle, so I can ride to school now.”, we use present perfect tense to tell ________.A.the result of a past actionB.actions that happened in the pastC.actions that happened at a certain time in the pastD.how many times an action has happened till now6. Britain ________ to leave European Union last year. David Cameron, former Prime Minister________ since then.A. decided; retiredB. decided; has been retiredC. has decided; retiredD. has decided; has retired7.—Jenny, you are so beautiful in your new dress!—Thanks! But I __________ it for several times.A. wearB. will wearC. was wearingD. have worn 8.—Is this your camera?—Yes, I ________ it for two weeks.A. boughtB. hadC. have hadD. have bought9. The shop in Wanda Square _________ for six years, but I _________ there so far.A. has opened; haven’t goneB. has been opened; haven’t beenC. has been open; haven’t goneD. has been opened; haven’t been 10.—Mary, it’s really nice to see you again. Where have you ________?—I ________ a school in a mountain area for two years.A.gone; have been to B.been; have been to C.gone; have been in D.been; have been in 11.— Where will you visit during the coming summer holiday?—I’m not sure. Maybe I will go to Sanya. One of my best friends _________ Hainan twice and he says it is good place to visit.A.has gone to B.has been in C.has been to D.has been 12.—How long can I ______ these books?—At most for a month, then you have to return them to the library.A.keep B.lend C.have D.borrow13.—________ you ________ your homework yet?—Yes. I ________ it a moment ago.A.Did; do; finished B.Have; done; finishedC.Have; done; have finished D.will; do; finish14.—Mary, I remember you _________ several years ago.—Yes, I _________ for 3 years.A.married; have married B.married; marriedC.married; have been married D.have married; have been married15.Which sentence is correct?A.I wonder where you have gone. B.I wonder where they visited.C.I wonder when you have finished the task. D.I wonder what is the matter with you.16.Sophie and I are good friends. We ________ each other for four years.A.know B.knew C.have known D.will know17.I ________ my computer for ten years, but it still works well.A.bought B.have had C.have bought D.buy18.—It’s ten years since we ________ here.—How time flies! We ________ in China for so long.A.come; work B.came; worked C.come; will work D.came; have worked 19.You have never been to the History Museum, ________?A.are you B.did you C.have you20.—Can you tell me the ________ of the bag?—Sorry. I haven’t ________ it.A.weight; weight B.weighed; weighed C.weight; weighed D.weighed; weight 21.— Is Tom at home?— No, he ________ to the town.A.has been B.has gone C.goes D.will go22.Maybe Tom ________ his work. The light in his room is still on.A.doesn’t finish B.didn’t finish C.won’t finish D.hasn’t finished 23.So far, I ________ two books by Liu Cixin. One is The Wandering Earth and the other is The Three-Body Problem.A.read B.have read C.was reading24.—Is Tom at home now?—No, he ___________ the supermarket. But he will come back soon.A.has gone in B.has gone to C.has been in D.has been to 25.—________ the movie ________?—________.A.When did; start; Since 3 o’clock agoB.How long was; on; Since at 3 o’clockC.When has; started; Since 3 o’clock beforeD.How long has; been on; Since 3 o’clock26.I am not sure how long Oliver ________.A.has joined the army B.has joined in the armyC.has served the army D.has served in the army27.Tom has lived in Shanghai _________ 2003. He has live here _________ many years. A.in; for B.since; for C.since; at D.in; since28.It ________ the first time that ________ New York, because there is a photo of him in front of the Empire State Building hanging in his room.A.is; Byron has been in B.isn’t; Byron has gone toC.is; Byron has been for D.isn’t; Byron has been to29.My parents ________ to Los Angeles before.A.were B.will be C.are D.have been30.—Have scientists found any life on Mars?—No, they ________ any living things on any other plane till now.A.are discovering B.didn’t discover C.haven’t discovered D.discovered【参考答案】一、单选题(共30题)1.B【解析】句意:——汤姆,你爸爸在哪儿?——他去超市了。
人教版七年级英语现在完成时练习题50题【含答案解析】1.I____my homework already.A.finishedB.have finishedC.finishD.will finish答案解析:B。
现在完成时的结构是have/has+过去分词,A 是一般过去时,C 是一般现在时,D 是一般将来时,只有B 符合现在完成时的结构。
本题表示“我已经完成了我的作业”。
2.She____the book three times.A.readB.has readC.readsD.will read答案解析:B。
“three times”表示已经发生的动作,要用现在完成时,A 是一般过去时,C 是一般现在时,D 是一般将来时,只有 B 符合现在完成时的结构。
本题表示“她已经读了这本书三次”。
3.They____to Beijing twice.A.wentB.have goneC.goD.have been答案解析:D。
“twice”表示已经发生的动作,要用现在完成时,A 是一般过去时,C 是一般现在时。
“have gone to”表示去了某地还没回来,“have been to”表示去过某地已经回来,根据题意应该是去过北京两次已经回来,所以选D。
本题表示“他们已经去过北京两次”。
4.We____English for five years.A.studyB.have studiedC.studiedD.will study答案解析:B。
“for five years”表示一段时间,要用现在完成时,A 是一般现在时,C 是一般过去时,D 是一般将来时,只有 B 符合现在完成时的结构。
本题表示“我们已经学习英语五年了”。
5.He____never____to Shanghai.A.has,beenB.have,beenC.has,goneD.have,gone答案解析:A。
“never”表示从未,要用现在完成时,主语是he,所以用has。
中考英语现在完成时练习题20题(带答案)1.I have known him_____I was a child.A.sinceB.forC.whenD.before答案解析:A。
“since+过去时间点”表示从过去某一时间点开始,一直持续到现在,符合现在完成时用法。
选项B“for+时间段”也用于现在完成时,但题干中不是时间段;选项C“when”引导时间状语从句,一般不与现在完成时连用;选项D“before”不符合此语境。
2.She_____her homework already.A.has finishedB.finishedC.will finishD.finishes答案解析:A。
“already”是现在完成时的标志词,所以用has finished。
选项B 是一般过去时;选项C 是一般将来时;选项D 是一般现在时。
3.They_____to Beijing twice.A.have goneB.have beenC.wentD.go答案解析:B。
“have been to”表示去过某地,人已经回来;“have gone to”表示去了某地,人还没回来。
根据twice 可知去过两次且人已经回来,用have been。
选项C 和D 分别是一般过去时和一般现在时。
4.He_____the book for two days.A.has borrowedB.borrowedC.has keptD.kept答案解析:C。
“for two days”是时间段,要用延续性动词,borrow 是短暂性动词,keep 是延续性动词,现在完成时用has kept。
选项 A 和B 中borrow 不能与时间段连用;选项D 是一般过去时。
5._____you ever_____to Shanghai?A.Have,beenB.Have,goneC.Did,goD.Were,go答案解析:A。
ever 是现在完成时的标志词,“have been to”表示去过某地,人已经回来;“have gone to”表示去了某地,人还没回来。
七年级英语现在完成时练习题40题(带答案)1. I ______ my homework already.A. finishB. have finishedC. finishedD. will finish答案:B。
解析:根据现在完成时的结构“have/has + 过去分词”,句中有already( 已经)这个标志词,通常用于现在完成时,所以要用have finished。
A选项是一般现在时,C选项是一般过去时,D选项是一般将来时。
2. She ______ to the library three times this week.A. has beenB. wasC. isD. will be答案:A。
解析:句中this week(本周)表示一个时间段,three times( 三次)表示次数,这种情况下用现在完成时表示从过去到现在的经历,结构为have/has + 过去分词,这里主语是she,所以用has been。
B选项是一般过去时,C选项是一般现在时,D选项是一般将来时。
3. They ______ a lot of English words so far.A. learnB. learnedC. have learnedD. will learn答案:C。
解析:so far 到目前为止)是现在完成时的标志词,现在完成时结构是have/has + 过去分词,主语是they,所以用have learned。
A选项是一般现在时,B选项是一般过去时,D选项是一般将来时。
4. My brother ______ his new bike for a month.A. has hadB. hadC. haveD. will have答案:A。
解析:for a month( 一个月)表示一段时间,在现在完成时中可以和延续性动词连用,have 拥有)的过去分词是had,主语是my brother,是第三人称单数,所以用has had。
现在完成时一、结构:现在完成时由“助动词have (has) +过去分词”构成。
其否定式是在助动词have/has后加not;一般疑问句是将助动词have/has移至句首。
若肯定句中有already,在变成否定句、疑问句时应将其改成yet。
eg. I have already posted the letter. (信已经不在我这儿了)Her friend has already posted the photos to him. (改为否定句和疑问句)He r friend _______ the photos to him _______. (hasn’t posted, yet)_______ her friend _______ the photos to him _______?(has, posted, yet)二、用法:1、表示过去发生的某一动作对现在造成的影响或结果,常与一些时间状语,如:already,yet,ever,never,just,before, once, twice等连用,也可以和包括现在在内的时间状语,如these days, today, this year, so far等连用.1)--- Who will go to the airport to meet Jenny?--- I will. I _______ her several times. I can find her easily.A. metB. have metC. had metD. will meet(B)2)It’s 7:30. I can’t believe you _______ cooking dinner yet, Sally.A. haven’t startedB. didn’t startC. don’t startD. hasn’t started(A)2、表示过去发生的动作或存在的状态,一直持续到现在,也许还将继续下去,可以和表示从过去某一时刻延续到现在的一段时间的状语连用,即for +时间段,since+时间点/从句, in the last ten years等,谓语只可用延续性动词.eg.Mr.Liu has lived here for five years.解析:(一)英语动词根据词义可分为两种,一种是延续性的,一种是终止性的,终止性动词(也可称为非延续性动词,瞬间动词,或点动词),如begin,start,die,buy,leave,come等,表示动作的发生与结束于一瞬间完成,不能再延续,所以它的现在完成时不能和表示延续的时间状语连用,即不能与表示一段时间的状语,for+时间段, since+时间点/从句连用,也不能用在how long引导的特殊疑问句中.eg. I've left Shanghai for three days.(×)I've been away from Shanghai for three days.( √ ).I left Shanghai three days ago. ( √ )It is /has been three days since I left Shanghai.( √ )(二)初中英语课本中常见终止性动词有:leave, go, come, arrive, begin, buy, borrow, die, join, become等.终止性动词要表示持续时,可用以下方法:⑴将时间状语改为时间段+ ago,句中谓语动词用一般过去时.eg.我弟弟参军两年了. My brother joined the army two years ago.⑵若保留for+时间段,since+时间点/从句,或用在how long句型中,则需将终止性动词改为相应的状态动词或延续性动词.常见终止性动词与延续性动词(或状态动词)的对应关系如下:open-----be open die------be dead close----be closed become---beborrow---keep begin/start-----be on put on----wear leave---be away (from)buy-----have fall asleep----be asleep end/finish-----be overcatch a cold-----have a cold come/go/arrive/get/reach/move------be in/atjoin the army----be in the army be a soldierjoin the Party----be in the Party be a Party member→My brother has been in the army for two years.→ My brother has been a soldier for two years.(三)Has been to和been in/at been to去过某地,表示某人的一种经历,可以和once ,twice, already, ever, never等连用.eg. She has been to Shanghai twice. (表示目前人在这里)has gone to去某地了,说话时某人已离开此地,在去某地的途中或已在某地,eg. She has gone to Shanghai。
七年级英语现在完成时练习题40题含答案解析1.I _______ my homework already.A.finishedB.have finishedC.finishD.will finish答案解析:B。
本题考查现在完成时的用法。
现在完成时表示过去发生的动作对现在造成的影响或结果。
句子中有already,是现在完成时的标志词。
A 选项是一般过去时;C 选项是一般现在时;D 选项是一般将来时。
只有B 选项是现在完成时。
2.She _______ to Beijing twice.A.has beenB.wasC.isD.will be答案解析:A。
句子中有twice,表示去过某地几次,要用现在完成时。
B 选项是一般过去时;C 选项是一般现在时;D 选项是一般将来时。
只有A 选项has been to 表示去过某地。
3.We _______ English for five years.A.learnB.learnedC.have learnedD.will learn答案解析:C。
for five years 是现在完成时的标志词,表示一段时间。
A 选项是一般现在时;B 选项是一般过去时;D 选项是一般将来时。
只有C 选项是现在完成时。
4.They _______ not seen the movie yet.A.haveB.hasC.areD.were答案解析:A。
yet 是现在完成时的标志词。
主语是they,所以用have。
B 选项has 用于第三人称单数;C 选项are 是be 动词的现在时;D 选项were 是be 动词的过去时。
5.Have you _______ been to Shanghai?A.everB.neverC.yetD.already答案解析:A。
ever 常用于疑问句中,表示曾经。
B 选项never 表示从未;C 选项yet 常用于否定句和疑问句中;D 选项already 常用于肯定句中。
一、 单项选择。
1、Both his parents look sad .Maybe they __________ what's happened to him .knew B . have known C . must know D .will knowHe has ________ been to Shanghai , has he ?already B .never Have you met Mr just B . agoA . 2、A . 3、 A . 4、 T he famous writer A . is writing 5、 一 Our country —Yes . I hope it C .ever D . still Li ______ ?C .beforeD . a moment ago _ one new book in the past two yearsA . has C . hasB .was writingC .wroteD .has written a lot sofar . will be evenB . 6、 Zhao Lan already in this school for two yearsA .was ; study ingB . will ; studyC .has ; studied D, .are ; study ing7、We Xiao Li since she was a little girl .A .knowB . had knownC . have knownD . knew& Harr y Potter is a very nice film 」 it twice .A will see.have seen C saw D .see9、 —These farmers have been to the United States .—— Reall y? When there ?A .will they goB . did they goC do they goD . have they gone10、 you your homework yet ?—Yes . I it a moment ago .changed ; goodcha nged ; betterA . C . 11、 A . 12、 cha nged ; well changed ; better D . Did ; do ; fini shedB Have ; done ; fini shedHav e ;done ; hav e fini shed D . will ; do ; finishHis fatherthe Part y since 1978 .joined B . has joinedC . was inD . has been in—Do you —Sure know him well ? .We _________ f riends since ten years ago .were B . have been C . have become D . have made —How longhave you A . 13、 A . bee n B . gone C comeD arrived14、 Hurr y up! The pla y for ten minu tesA . has begunB . had beg unC . has been on D. 15、 It te n years since he left the army . A . is B . has C . will D washere ?began16、 —About two mon ths . Miss Gree n isn't A .has gone B . went in the C .will office . she _______ to the library .go D . has been17、My parents _______ Shandong for ten years .A . have been inB . have been to三、 汉译英。
矿产资源开发利用方案编写内容要求及审查大纲
矿产资源开发利用方案编写内容要求及《矿产资源开发利用方案》审查大纲一、概述
㈠矿区位置、隶属关系和企业性质。
如为改扩建矿山, 应说明矿山现状、
特点及存在的主要问题。
㈡编制依据
(1简述项目前期工作进展情况及与有关方面对项目的意向性协议情况。
(2 列出开发利用方案编制所依据的主要基础性资料的名称。
如经储量管理部门认定的矿区地质勘探报告、选矿试验报告、加工利用试验报告、工程地质初评资料、矿区水文资料和供水资料等。
对改、扩建矿山应有生产实际资料, 如矿山总平面现状图、矿床开拓系统图、采场现状图和主要采选设备清单等。
二、矿产品需求现状和预测
㈠该矿产在国内需求情况和市场供应情况
1、矿产品现状及加工利用趋向。
2、国内近、远期的需求量及主要销向预测。
㈡产品价格分析
1、国内矿产品价格现状。
2、矿产品价格稳定性及变化趋势。
三、矿产资源概况
㈠矿区总体概况
1、矿区总体规划情况。
2、矿区矿产资源概况。
3、该设计与矿区总体开发的关系。
㈡该设计项目的资源概况
1、矿床地质及构造特征。
2、矿床开采技术条件及水文地质条件。