版权说明:本文档由用户提供并上传,收益归属内容提供方,若内容存在侵权,请进行举报或认领
文档简介
1、初中英语八大时态全套精讲9.1 一般现在时的用法时间状语: every ,1) 经常性或习惯性的动作,常与表示频腮度的时间状语连用。sometimes, at , on SundayI leave home for school at 7 every morning.2) 客观真理,客观存在,科学事实。The earth moves around the sun. Shanghai lies in the east of China.3) 表示格言或警句中。Pride goes before a fall. 骄者必败。注意: 此用法如果出现在宾语从句中,即使主句是过去时,从句谓语也要用一般现在
2、时。例: Columbus proved that the earth is round.4) 现在时刻的状态、能力、性格、个性。I don't want so much. Ann Wang writes good English but does not speak well.比较: Now I put the sugar in the cup. I am doing my homework now.第一句用一般现在时,用于操作演示或指导说明的示范性动作,表示言行的瞬间动作。再如: Now watch me, I switch on the current and stand bac
3、k. 第二句中的now 是进行时的标志,表示正在进行的动作的客观状况,所以后句用一般现在时。二 . 构成及变化1、 be 动词的变化肯定句:主语 +be(am,is,are)+其它。如: I am a boy.我是一个男孩。否定句:主语+ be + not +其它。如:He is not a worker. 他不是工人。一般疑问句:Be +主语+其它。如: -Are you a student? -Yes. I am. / No, I'm not.特殊疑问句:疑问词+一般疑问句。如:2、行为动词的变化当主语为第一,二人称及复数时,助动词为肯定句:主语+动词原形(+其它)。如:否定句:主
4、语+ don't+ 动词原形(+其它)。一般疑问句:Do +主语+动词原形+其它?school l? Yes, we do. / No, we don't.特殊疑问句:疑问词 +以 do 开头的一般疑问句?当主语为第三人称单数时,助动词为does肯定句:主语+动词三单式(+其它)。如:Where is my bike?doWe often play basketball after school.如: we don t play basketball after school如: Do you often play basketball after如: What do you
5、often do after school ?He swims well.否定句:主语+ doesn' t+词原形(+其它)。如:He doesn t swim well.一般疑问句:Does +主语+动词原形+其它。如: Does he swim well ?Yes, he does. / No, he doesn't.特殊疑问句:疑问词+以does开头的一般疑问句?如: How does your father go to work?(只有在第三人称为主语的肯定句中,动词才用三单式)(1)多数动词直接加s:runs gets likes collets takes play
6、s climbs(2)结尾是s, x, sh, ch, o前为辅音字母,结尾加es :watches teaches goes does washes crosses mixes brushes(3)动词末尾y前为辅音:将y改为i加es:studyfstudies fly fflies carry fcarries cry fcries但在 y 前如果为元音则直接加s:buys says2 一般过去时的用法1)在确定的过去时间里所发生的动作或存在的状态。时间状语有:yesterday, an hour ago, the other day, in 1982 yesterday morning(
7、afternoon, evening ) last night (week, month, yeara moment ago , a week ago,three years ago just now,等。Where did you go just now?2)表示在过去一段时间内,经常性或习惯性的动作。When I was a child, I often played football in the street.Whenever the Browns went during their visit, they were given a warm welcome.3)句型:It is ti
8、me for sb. to do sth ”到 时间了 ""该了"It is time sb. did sth.”时间已迟了 "“早该了”你该睡觉了。你早该睡觉了。表示 '宁愿某人做某事It is time for you to go to bed. It is time you went to bed. would (had) rather sb. did sth. I'd rather you came tomorrow.4) wish, wonder, think, hope 等用过去时,作试探性的询问、请求、建议等。I thoug
9、ht you might have some. 我以为你想要一些。比较:一般过去时表示的动作或状态都已成为过去,现已不复存在。Christine was an invalid all her life.(含义:她已不在人间。)Christine has been an invalid all her life.(含义:她现在还活着)Mrs. Darby lived in Kentucky for seven years.(含义:达比太太已不再住在肯塔基州。)Mrs. Darby has lived in Kentucky for seven years.( 含义:现在还住在肯塔基州,有可能指刚
10、离去)注意: 用过去时表示现在,表示委婉语气。1)动词 want, hope, wonder, think, intend 等。Did you want anything else?I wondered if you could help me.2)情态动词could, would.Could you lend me your bike?3 used to / be used toused to + do: "过去常常"表示过去习惯性的动作或状态,但如今已不存在。Mother used not to be so forgetful.Scarf used to take a
11、walk.(过去常常散步)be used to + doing:对已感到习惯,或"习惯于",to是介词,后需加名词或动名 词。He is used to a vegetarian diet.Scarf is used to taking a walk.(现在习惯于散步)典型例题Your phone number again? I _ quite catch it.It's 69568442.A. didn't B. couldn't C. don't D. can't答案 A. 本句虽没有明确的时间状语,但从语意上看出,在听的时候没有
12、听懂这个动作发生在过去,因此应用过去时。二、构成及变化1 . Be动词在一般过去时中的变化:am 和 is 在一般过去时中变为was。 (was not=wasn t)are 在一般过去时中变为were。 (were not=weren t)带有 was 或 were 的句子,其否定、 疑问的变化和is, am, are 一样, 即否定句在was 或 were后加not, 一般疑问句把 was或were调到句首。2 .行为动词在一般过去时中的变化:肯定句 : 主语 + 动词的过去式.I watched a film last Sunday .否定句 : 主语 + didn t +动词原形.I
13、didn t watch a film last Sunday .一般疑问句:Did + 主语 + 动词原形?Did you watch a film last Sunday ? Yes, I did . No , I didn t .特殊疑问句:疑问词+ 以 did 开头的一般疑问句?What did you do last Sunday ?3、现在进行时一、意义 当表示现在正在进行的动作或正在发生的事。时间标志now,句前的look ,listen二、构成:be (am, is ,are )+动词现在分词-ing 形式肯定句:主语 + be + 现在分词V-ing (+ 其他 )I m d
14、oing my homework now .否定句:主语 +be+not+动词-ing +其他.I m not doing my homework now.一般疑问句:Be+主语+动词-ing +其他?Are you doing your home work now?Yes, I am . No , I m not .特殊疑问句:特殊疑问词 +be+主语+动词-ing+其他?What are you doing now ?三、现在分词的构成:(1)一般在动词末尾直接加ing,(2)以不发音字母e结尾的动词,先去掉 e,再加ing,如 skate fskating make fmaking da
15、nce f dancing write f writing have f having ride f riding come f coming(3)以重读闭音节结尾的动词,中间只有一个元音字母,词尾只有一个辅音字母,应双写末尾的辅音字母,再加ing, 如: putting running beginning stopping swimming shoppingjoggingsitting getting forgetting letting四、现在进行时的基本用法:a. 表示现在( 指说话人说话时) 正在发生的事情。We are waiting for you.b. 习惯进行:表示长期的或重复
16、性的动作,说话时动作未必正在进行。Mr. Green is writing another novel.(说话时并未在写,只处于写作的状态。)She is learning piano under Mr. Smith.c. 表示渐变的动词有:get, grow, become, turn, run, go, begin 等。The leaves are turning red.It's getting warmer and warmer.d. 与 always, constantly, forever 等词连用,表示反复发生的动作或持续存在的状态,往 往带有说话人的主观色彩。You a
17、re always changing your mind.典型例题My dictionary _, I have looked for it everywhere but still_ it.A. has lost, don't find B. is missing, don't find C. has lost, haven't found D. is missing, haven't found.答案 D. 前句是一个仍在持续的状态,应用进行时,由于没有找到,其影响仍然存在,应用完成时,瞬间动词用于否定式时可用于完成时。9 不用进行时的动词1) 事实状态的动
18、词have, belong, possess, cost, owe, exist, include, contain, matter, weigh, measure, continueI have two brothers.This house belongs to my sister.2) 心理状态的动词Know, realize, think see, believe, suppose, imagine, agree, recognize, remember, want, need, forget, prefer, mean, understand, love, hateI need yo
19、ur help.He loves her very much.3) ) 瞬间动词accept, receive, complete, finish, give, allow, decide, refuse.I accept your advice.4) 系动词seem, remain, lie, see, hear, smell, feel, taste, get, become, turnYou seem a little tired.4 过去进行时1)概念:过去进行时主要表示过去某一时刻正在进行的动作,或表示过去某一阶段一直在进行的动作2)过去进行时的主要用法是描述一件事发生的背景;一个长
20、动作发生的时候,另一个短动作发生。3) 常用的时间状语this morning, the whole morning, all day yesterday, from nine to ten last evening, when,whileMy brother fell while he was riding his bicycle and hurt himself.It was raining when they left the station.When I got to the top of the mountain, the sun was shining.典型例题1) Mary a
21、dress when she cut her finger.A. made B. is making C. was making D. makes答案C.割伤手指是已发生的事情,应用过去时。同 时,when表时间的同时性,“玛 丽在做衣服时"提供事情发生的背景,因此用过去进行时。2) As she the newspaper, Granny asleep.read; was falling B. was reading; fell C. was reading ; was falling D. read; fell答案B.句中的as = when, while,意为“当之时”。描述一
22、件事发生的背景时,用过去进行;一个长动作发生的时候,另一个短动作发生。句意为"在她看报纸时,奶奶睡着了。”句中的fell (fall的过去时),是系动词,后跟形容词,如: fall sick。一、过去进行时结构:was/were +动词的现在分词否定句则在 was/were后加一个 not,疑问句将 was/were提前则可。如: He was reading a book at 5:00pm yesterday.fHe was not reading a book at 5:00 yesterday.fWas he reading a book at 5:00 yesterday?
23、 (Yes, he was./ No, he wasn ' t.) fWhat was he doing at 5:00 yesterday?二、过去进行时用法:1 .过去进行时主要表示过去某个时刻正在进行的动作,常和表示过去的状语连用。如:(just) then 那时. 当时 at this/that time 在交文用B时yesterday afternoon 昨天下午at nine 在九点last night 昨晚(at) this time yesterday 在昨天这个时候但在不少情况下,没有表示时间的状语,这时需要通过上下文来表示。What were you doing a
24、t nine last night?昨晚九点的时候,你在做什么? I was watching TV at home yesterday afternoon.我昨天下午正在家里看电视。They were playing football at this time yesterd'Oy 昨天这个时候他们在踢足球。2 .过去进行时也可以表示过去某一段时间内正在进行的动作。常与those days, the wholemorning, from 8:00 to 12:00 last night 等时间状语连用。(1) From 1983 to 1998 1 he was teaching a
25、t Yale . 从 1983 到 1998 年,他正在耶鲁大学教 书。(2) They were building a bridge l,st wintel 去年冬天他们正在造 座桥。(3) He was writing a book those days 那几天他正在写 本书3 .过去进行时与频度副词always forever,continually, constantly等连用时表示过去经常反复的动作,常常带有埋怨、讨厌、赞扬或喜爱等情绪。 My sister was always forgetting things.(表示埋怨) He was always helping other
26、s.(表示赞扬)4 .过去进行时表示过去将要发生的动作。现在进行时可以表示将来的动作,同样,过去进行时也可以表示从过去某时看来将要发生的动作,常用在间接引语中。 Lucy arrived in Beijing last Friday. But she was leaving for Hong Kong the next morning.上周五Lucy到达北京,但第二天早晨就要动身去香港了。She asked him if he was coming back for lunch.她问他午饭是否准备回来吃。5、过去进行时和一般过去时的区别。(1)过去进行时表示过色型电巨型行的动作,而千般过去时则
27、表示一个完成的动乍。也 | 就是说用一般过去时,只表示有过这件事;用过去进行时,则强调动作的连续性。I wrote a letter this morning.今天上午我写了一封信。(信写完了)I was writing a letter this morning.今天上午我在写一封信。(信不一定写完)The children watched TV yesterday evening.昨天晚上孩子们看了电视。(强调过去发生了这件The children were watching TV yesterday evening.昨晚孩子们都在看电视。(强调昨晚看电视这一动作的持续性)(2)表示过去的
28、状态、感觉及心理活动的静态动词(如be, like, love, hate, fear, own, hear, see, know, want, notice)可用于一般过去时,但通常不用于进行时。如:I hated it when a man spoke with his mouth full of food.我讨厌人们说话时 口里含着食物。(3) 一般过去时与 always, constantly, forever, continually等连用,表示过去经常性、 习惯性的动作”而过去进行时与 always, constantly, forever, continually等连用,表示动作
29、的重复,常带有感 *彩。如:He always got up at six. 他过去总是六点起床。He was always thinking of his work. 他总是一心想到工作。(4)有时过去进行时可以用来替换一般过去时,但一般过去时表示主语的行为是经过认真考虑的;而过去进行时表示一种较随便或没有进行仔细考虑的行为。如:I thought that he would agree with us.我原以为它会同意我们的。I was thinking of persuading him to follow my advice.我想到了要说服他接受我们的建6.使用过去进行时应注意的几点(
30、1)动词hope, wonder等的过去进行时常用来表示提出要求,虽然表示现在的内容,但语气比一般现在时或一般过去时要委婉。如:I was wondering whether you could come to join us. 我想你能否过来跟我们起活 动?7下面几种情况不用一般过去时而要用过去进行时:(1) .表示过去某一阶段暂时性的习惯动作时。如:Tom was getting up at six o ' clock every day thaiweek周里每天都是六点钟起床。(2) .与always连用表示赞美,厌烦等感情色彩时。如:John was always coming
31、 to school late.约翰上学总是迟至 U。Lei Feng was always doing good deeds for the people.雷锋总是为人民做好事。(3)用来描写故事发生的情景时。如:It was a dark night. The wind was blowing hard and the rain was falling heavily. A PLA man suddenly appeared on the river bank. He wanted to cross the river. 那是个漆黑的夜 晚,风刮得很厉害,雨下得很大,一个解放军战士突然出现
32、在河岸上,他想过河去。(4) when作并列连词,表示“这时)突然”之意时,第一个并列分句用过去进行时,when引导的并列分句用一般过去时。如:I was taking a walk when I met him. 我正在散步,突然遇见了他。We were playing outside when it began to rain. 我们正在夕卜边玩,这时下起雨来了。go, come, leave, start, arrive等动词可用过去进行时表示过去将来的含义。如:I was leaving for Wuhan that day.那天我正要去武汉。She was coming later.
33、她随后就来。8过去进行时表示婉转语气(只限于want, hope, wonder等动词),用以提出请求。如:I was wondering if you could help me.I was hoping you could send me home.、when, while 的用法when和while与过去进行时有着密切的关系,他们作从属连词时都有当 时候”之意,用法稍有不同: when引导的时间状语从句的谓语动词可以是短暂性动词,也可以是延续性动词,而while引导的时间状语从句中的谓语动词只能是延续性动词。 when引导的从句谓语动词如果是短暂性动词则用一般过去时,主句是延续性动词则用
34、过去进行时,从句动作发生在主句动作的时间段之内(长动作用过去进行时, 短动作用一般过去时);如果主句和从句两个谓语动词都是延续性动词则全部用过 去进彳T时,这时 when 和 while者B可以用。 when从句的谓语动词可以在主句谓语动作之前、之后或同时发生;while 和 as从句的谓语动作必须是和主句谓语动作同时发生。when相当于在那时”,;相当于but,表示w when和while两个词还可以用作并列连词,但意思不同,等于 at that time 或 just then;而 while 则相当于 而;去丁 但是对比关系。(这一点暂时可以不掌握)eg. I was playing c
35、omputer games when my father gothome.=When my father got home,I was playing computer games.(2) Mother was cooking when/while I was doing my homework.=When/While I was doing my homework, mother was cooking.过去进行时巩固练习:(聪明的你一定能全部做对)1. Simon(make) a model plane at 8:00 a.m.2. Peter(do) his homework at se
36、ven last night.3. They(watch) a football match ,om 7:00 to 9:00 last night.4. He(try) to draw a plane on the blackboard at that time.5. What book you (read) when I (see)you at four.yesterday afternoon?While she(watch) TV , her son(play) outside the room.It(begin) to rain while we(work) in the
37、 field.I(do) my homework last night when the light(go) out. go out熄灭I saw you in the reading room yesterday , Tom. What were you doing?意为Oh, I(read) some books on science.10 . Girls(dance) while boys(sing) at the party.11 .- Did you see Tim just now?-Yes. He(fish) by the river.12 .When the teacher(c
38、ome) into the classroom, the students (laugh) loudly.5 一般将来时一、意义:表示将来某个时间要发生的动作或存在的状态,也表示将来经常或重复发生的动作。时间标志:tomorrow , soon , next Monday , next year , next weekend , this afternoon ,this evening二 . 构成及变化:一般将来时常用的两种结构be going to+动词原形:表示打算、准备做的事或即将发生或肯定要发生的事。shall/will+动词原形:表示将要发生的动作或情况,没有太多的计划性,还用来表示
39、意愿 be going to +动词原形肯定句主语 +be(am /,is,/ are) going to +动词原形+其它成份My sister is going to learn English next year. 我姐姐准备明年学英语。否定句主语 +be(am / is / are)not going to + 动词原形+其它成份I am not going to(go to)the cinema tonight. 我今天晚上不打算去看电影。一般疑问句Be (am / is / are)+主语+going to+动词原型+其它成份 ?Is your father going to pl
40、ay basketball with you ? 你父亲打算和你去打篮球吗?No , he isn t.不。 .特殊疑问句特殊疑问词(Wh-)+ 一般疑问句?Where are you going to spend Spring Fesital.? 春节你打算在哪过? .注意: be going to 结构后面习惯上不跟go , come 等表位移的动词,一般用该动词的进行时形式表示。如:He ' s going to New York next week.周他要去纽约 . .will /shall + 动词原形(在书面语中,主语是第一人称时,常用shall ,在口语中,所有人称都可以
41、用will)1 .肯定句主语+wiH/shall+动词原形+其它成份(shall) write to him next week.下周我将给他写信。2 .否定句主语 + will /shall+ not + 动词原形+其它成份They won t watch TV this evening. 今天晚上他们不看电视。3 .一般疑问句will/shall+ 主语+动词原形+其它成份Will you stay at home with us tomorrow ? 明天你和我们呆在家里好吗?4 .特殊疑问句特殊疑问词(Wh-) + 一般疑问句When will your father be back?
42、 你爸爸什么时侯回来?三、附:Shall I /we 常用来征求对方意见,而问对方是否愿意,或者表示客气的邀请,常用Will you?他们的回答比较灵活。5 .Shall we go to the park ?肯定Sure , let s go .否定 No , let s go to the cinema.2.Will you please come to my birthday party next week ?肯定 Yes, I will. / Sure .否定 I m sorry. I m afraid I can t.四、时间标志:tomorrow , soon , next Mon
43、day , next year , next weekend , thisafternoon , this evening1) shall 用于第一人称,常被will 所代替。will 在陈述句中用于各人称,在争求意见时常用于第二人称。Which paragraph shall I read first.Will you be at home at seven this evening?2) be going to +不定式,表示将来。a. 主语的意图,即将做某事。What are you going to do tomorrow?b. 计划,安排要发生的事。The play is going
44、 to be produced next month。c. 有迹象要发生的事Look at the dark clouds, there is going to be a storm.3) be +不定式表将来,按计划或正式安排将发生的事。We are to discuss the report next Saturday.4) be about to +不定式,意为马上做某事。He is about to leave for Beijing.注意: be about to 不能与 tomorrow, next week 等表示明确将来时的时间状语连用。5 be going to / will
45、用于条件句时,be going to 表将来will 表意愿If you are going to make a journey, you'd better get ready for it as soon as possible.Now if you will take off your clothes, we will fit the new clothes on you in front of the mirror 6 be to 和 be going tobe to 表示客观安排或受人指示而做某事。be going to 表示主观的打算或计划。I am to play foot
46、ball tomorrow afternoon. (客观安排)I'm going to play football tomorrow afternoon. ( 主观安排).7 一般现在时表将来1) 下列动词:come, go, arrive, leave, start, begin, return 的一般现在时表将来。这主要用来表示在时间上已确定或安排好的事情。The train leaves at six tomorrow morning.When does the bus star? It stars in ten minutes.2)倒装句,表示动作正在进行,如:Here com
47、es the bus. = The bus is coming.There goes the bell. = The bell is ringing.3)在时间或条件句中。When Bill comes (不是will come), ask him to wait for me.I'll write to you as soon as I arrive there.4)在动词hope, take care that, make sure that 等后。I hope they have a nice time next week.Make sure that the windows a
48、re closed before you leave the room.8 用现在进行时表示将来意为: " 意图" 、 " 打算" 、 " 安排" 、常用于人。常用词为come, go, start, arrive, leave, stay等。I'm leaving tomorrow.Are you staying here till next week?1 .概念:立足于过去某一时刻,从过去看将来,常用于宾语从句中。2 .时间状语: the next day(morning, year ),the following mon
49、th(week ),etc.3 .基本结构: was/were/going to + do ; would/should + do.4 .否定形式: was/were/not + going to + do;would/should + not + do.5 .一般疑问句: was或were放于句首; would/should提到句首。6 .例句:He said he would go to Beijing the(1)过去将来时由助动词would+动词原形”构成。would常缩略为d(2)过去将来时的用法过去将来时表示过去的某一时间看来将要发生的动作或存在的状态。过去将来时常用在宾 语从句中
50、。如:I didn't know if she would come 。I wasn't sure whether he would doit。Wang Lei said that she would visit her uncle next Saturday 。 过去将来时也可以用“was(were) going to动词原形”来表示。如:I didn't know if she was going to come。Wang Lei said that she was going tovisit her uncle next Saterday。7现在完成时用法1:表示
51、:过去发生或已经完成的某一动作对现在造成的影响或结果。标志,: already, yet, just, ever, never, before用法2:表示:过去已经开始,持续到现在的动作或状态。标志,: for, since, since ago基本结构:助动词 have/has +动词的过去分词(当主语是第三人称单数时用has,其余人称用have)1)肯定式:主语 + have / has +过去分词2)否定式:主语 + have / has + not +过去分词3)一般疑问句:Have / Has +主语 +过去分词Yes,主语 + have/has.(肯定)No,主语 + haven&
52、#39;t/hasn't.(否定)4)特殊疑问句:特殊疑问词+have/has+主语+过去分词例句1.过去某时发生的动作到目前为止这个动作已经完成或刚刚完成。如:1)I have finished my homework.我做完家庭作业了。(过去某时开始做,到现在已完成)2)He has already come他已经来了。(过去某时开始离开某地到这来,现在已在这。)2.表示动作发生在过去并延续到现在。如:1)I have studied English for six years.我已经学了六年英语了。(六年前开始学英语,一直学到现在,也可能继续学也可能就此不学了。)2)I have
53、 lived in Shenyang since 1990.我从 1990 年就在沈阳住。(从1990年开始住在沈阳一直住到现在,也可能继续住也可能就此为止。)注意1)当表示一段时间,现在完成时可以用for或since引导的状语。例如:I' ve known Li Li for 4 years.我认识丽丽已经 4年了。1 have worked here since 8 years ago.自从 8 年前我就在这工作。注意2)当在肯定陈述句中含有 already或just时,在转换成否定句时,要把句中的already 或just去掉,在句末加上 yet.。例如:I have alrea
54、dy seen the film. I haven ' t seen the film yetHe has just come. He hasn ' t come yet?使用时注意事项1. “ have/ has got 形式上是一种完成时,但和 ”have/ has 为同一意思“有 ”。如: Have you got pen-friends? Yes, I have.你有笔友吗?是的,我有。Has he got a lot of work to do? No, he hasn t.他有许多工作要做吗?不,他没有。2. have/has gone to 、 have/has
55、been to 和 have/has been in 的区别have/ has gone to 去了,在去某地的路上或在某地,人还未回来have/ has been to 曾经去过,人已经回来了have/ has been in 已经在,常与一段时间连用如: He has been to Shenyang before. 他以前曾去过沈阳。He has been in Shenyang for ten years. 他在沈阳10 年了。Has he gone to Shenyang? 他去沈阳了吗?3. have/ has been to常和 once, twice, never, ever连
56、用;have/ has gone to贝U不可。例如:一Has Tom ever been to Paris?汤姆去过巴黎吗 ?Yes, he ' s been there several times. 他去过好几次了。Where have they gone?他们去哪里了 ?They ' ve gone to Shenyang们去沈阳了。4. 非延续性动词不能用“现在完成时+ 表示一段时间的状语”的句型中。这类动词有:come, go, start, leave, die, buy, finish, join, borrow, stop 等。 但它们能够用表示持续状态的相应的延续性动词替换句中的非延续性性动词。例如: arrive, come f be here, be in buy f have begin, start - be on ;die - be deadfinish, end f be over go out f be outjoin f be inborrowf keep finish/end fbe overclose f be closed leave, move f be away; fall asl
温馨提示
- 1. 本站所有资源如无特殊说明,都需要本地电脑安装OFFICE2007和PDF阅读器。图纸软件为CAD,CAXA,PROE,UG,SolidWorks等.压缩文件请下载最新的WinRAR软件解压。
- 2. 本站的文档不包含任何第三方提供的附件图纸等,如果需要附件,请联系上传者。文件的所有权益归上传用户所有。
- 3. 本站RAR压缩包中若带图纸,网页内容里面会有图纸预览,若没有图纸预览就没有图纸。
- 4. 未经权益所有人同意不得将文件中的内容挪作商业或盈利用途。
- 5. 人人文库网仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对用户上传分享的文档内容本身不做任何修改或编辑,并不能对任何下载内容负责。
- 6. 下载文件中如有侵权或不适当内容,请与我们联系,我们立即纠正。
- 7. 本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。
最新文档
- 深度Dropout神经网络中信号动力学的多维度解析与前沿探索
- 深入剖析Web应用服务器中JNDI服务的架构、应用与优化策略
- 淮南矿区急倾斜A组煤开采水害防治:技术、实践与展望
- 淋巴细胞培养法评估人体维生素需求量的技术及其应用
- 液相质谱检测:解锁KCNJ5突变醛固酮腺瘤精准诊断密码
- 液体微小流量非定常流测量:原理剖析与方法探索
- 涉外民商事管辖权冲突的多维审视与化解路径探究
- 消费者视角下旅游景区品牌延伸评价体系构建与影响因素研究
- 消防安全管理制度
- 妊娠期肠梗阻的预防策略与高危人群筛查
- (三诊)2026年4月绵阳市高三高考适应性考试生物试卷(含答案)
- (一模)惠州市2026届高三4月模拟考试英语试卷(含答案详解)
- 市政道路设施巡查制度与问题上报处理流程
- 2026云南省投资控股集团有限公司招聘168人备考题库含答案详解(完整版)
- 2026福建漳州高新区区属国有企业招聘工作人员48人备考题库含答案详解(基础题)
- 【成都】2025年中国铁路成都局集团有限公司招聘高校毕业生1102人(一)笔试历年典型考题及考点剖析附带答案详解
- 2026年山东医学技术理论-通关题库及参考答案详解(研优卷)
- 2026新版中国废旧金属回收拆解项目可行性研究报告
- 桥梁工程半成品、成品保护措施
- 生物山西太原市2026年高三年级模拟考试(一)(太原一模)(3.25-3.27)
- 广东省深圳市福田区2026年中考历史一模试卷附答案
评论
0/150
提交评论