初中英语完成时态讲义+习题13218.pdf
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1、 语法专项二十三现在完成时 一、过去分词 1、概念:过去分词是分词的一种。规则动词的过去分词一般是由动词加 ed 构成,不规则动词的过去分词见不规则动词表。2、过去分词变化规则:规则动词:规则动词的过去分词的构成规则与规则动词的过去式的构成规则相同.四点变化规则:(1)一般动词,在词尾直接加“ed”.(然而要注意的是,过去分词并不是过去式)workworked-worked,visit-visited-visited (2)以不发音的“e”结尾的动词,只在词尾加“d”。livelived-lived (3)以“辅音字母+y”结尾的动词,将”y 变为”i,再加“ed”。study-studied
2、-studied,cry-cried-cried,try-tried-tried,fry-fried-fried。(4)重读闭音节结尾,末尾只有一个辅音字母,先双写该辅音字母,再加“ed。stop-stopped-stopped,drop-dropped-dropped 不规则动词,见不规则表(1)AAA 型:即原形、过去式和过去分词三者都相同.(共 8 个 costcostcost cut-cutcut hit-hithit hurt-hurthurt letlet-let put-putput readreadread setsetset (2)ABB 型:过去式、过去分词相同。(共 42
3、 个)1)过去式和过去分词都含有 ought.(4 个)bringbrought-brought buyboughtbought thinkthoughtthought fightfoughtfought 2)词尾有-ild,-end 时,只需把 d 变为 t。(4 个)buildbuiltbuilt lendlent lent sendsentsent spendspent spent 3)过去式、过去分词都含有 aught。(2 个)catchcaughtcaught teachtaughttaught 4)把eep、eel 变为ept、-elt。(4 个)keep-keptkept sl
4、eep-sleptslept sweep sweptswept feelfelt-felt 5)把-ell 变为-old。(2 个)telltold-told sell-soldsold 6)把ell、ill 变为elt 或ilt。(2 个)smellsmeltsmelt spellspeltspelt 7)把-eed、ead、eet 变为ed 或et。(3 个)feedfedfed leadled-led meet-metmet 8)过去式、过去分词都在原形词尾加 t。(4 个)learnlearntlearnt meanmeantmeant burnburnt-burnt dreamdre
5、amtdreamt 9)过去式、过去分词词尾去 y 变-id(4 个)saysaidsaid paypaidpaid laylaid-laid hear-heardheard 10)改变元音字母。(9 个)meetmetmet feedfedfed getgotgot sitsatsat findfoundfound holdheldheld winwonwon lose-lostlost stickstuckstuck 11)改变辅音字母.(4 个)makemademade buildbuilt-built send-sent-sent spendspentspent 12)改变元、辅音字母
6、.(4 个)leaveleft-left stand-stood-stood have/has-hadhad understandunderstoodunderstood (3)ABC 型:原形、过去式、过去分词都不相同。(共 39 个)1)i-au 变化。(5 个)beginbeganbegun drinkdrankdrunk sing-sangsung ring-rangrung swimswamswum 2)词尾为ow,-aw 时,过去式将其变为ew,过去分词在其原形后加 n.(5 个)blowblewblown drawdrewdrawn grow grewgrown knowknew
7、-known throw-threwthrown 3)词尾为“i+辅(1 个)+e”,过去式将 i 变为 o,过去分词多在原形后加 n,若那个辅音字母为 d 或 t,须双写 d 或 t 后加 n。(4 个)drive-drove-driven writewrotewritten ride roderidden riseroserisen 4)过去分词在过去式后加 n。(2 个)wake-woke-woken speakspokespoken 5)过去分词由过去式加ten 构成。(2 个)getgot-gotten/got forget-forgotforgotten 6)过去分词由原形加(e)
8、n 构成。(6 个)be-was(were)-been eatate-eaten fallfellfallen givegavegiven see-sawseen hidehidhidden(hid)7)词尾为-ake 时,过去式将其变为ook,过去分词在原形词后加-n。(3 个)take-tooktaken mistakemistookmistaken shakeshookshaken 8)原形、过去式和过去分词都不相同。(6 个)dodid-done flyflewflown gowentgone lielay-lain show-showedshown wearworeworn 9)词尾
9、为-eak 时,过去式将其变为oke,过去分词在过去式后加n。(2 个)breakbrokebroken speakspoke-spoken 10)词中间为“oo+辅(1 个)+e”或“ee+辅(1 个)+e”,过去式将 oo、ee 变为 o,过去分词在过去式后加-n。(1 个)choosechosechosen (4)AAB 型:过去式和原形相同。(1 个)beatbeat-beaten (5)ABA 型:过去分词和原形相同。(共 3 个)1).词中间为“o+辅+e时,过去式将 o 变为 a。(2 个)comecamecome becomebecamebecome 2)。ua-u 变化.(1
10、 个)run ranrun (6)情态动词型(除 must)只有原形和过去式,没有过去分词.(共 4 个)cancould maymight willwould shallshould must 既没有过去式也没有过去分词 二、现在完成时 1、概念:现在完成时表示过去发生或已经完成的动作对现在造成的影响或结果,也可表示过去已经开始,一直延续到现在的动作或状态.Eg:They have left.-他们已经离开了,也就是说现在他们人不在这里 Eg:He has learned English since 2001.从 2001 年开始学的,现在还在继续学着呢 2、基本结构:现在完成时的构成形式:
11、have/has(助动词)+done(过去分词)Eg:I/You/They/We have talked。He/She has talked.(1)现在完成时的肯定句:主语+have/has+过去分词 Eg:Susan has already finished her homework.(2)现在完成时的否定句:主语+have/has+not+过去分词 I/You/They/We havent(have not)talked.He/She hasnt(has not)talked。(3)现在完成时的一般疑问句:Have/Has+主语+过去分词 Have I/You/They/We talked
12、。Has he/she talked.肯定的简略回答是:Yes,主语have/has.,否定的简略回答是:No,主语have/has not。Eg:I have seen the film。Have you seen the film?Yes,I have./No,I havent。(4)现在完成时的特殊疑问句:疑问词+have/has+主语+过去分词 Eg:How many times has he been to England?他去过英国几次?3、。现在完成时的时间状语:for+一段时间(时间段),since+时间点或时间状语从句(自从),so far(到目前为止,迄今为止),ever(
13、曾经),never(从来不),just(刚刚),yet(还,已经),till now(到现在为止),until now,up to now(直到现在),in the past two yearsmonths(在过去的两年里数月),the last few years(近几年里),already(已经),recently(最近),lately(最近),once(一次),twice(两次),three times(三次)等等 4、现在完成时的用法(1)表示开始于过去的动作刚刚结束 Eg:We have already finished the work。我们已经完成了这项工作。(2)发生在过去的动
14、作对现在所造成的影响或产生的结果。Eg:Charlie has broken his left leg.查理摔断了左腿。(3)表示过去已经开始并持续到现在的动作或状态,或有可能继续延续下去。Eg:I have lived in Shanghai since I was ten years old.我从十岁起就住在上海。(4)表示从过去到现在曾经历过的事。Eg:I have read the book three times.这本书我看了三遍。5一般过去时与现在完成时的区别 1)一般过去时表示过去某时发生的动作或单纯叙述过去的事情,强调动作;现在完成时为过去发生的,强调过去的事情对现在的影响,强
15、调的是结果、影响。I saw this film yesterday。(强调看的动作发生过了。)I have seen this film.(强调对现在的影响,电影的内容已经知道了。)2)一般过去时常与具体的表示过去的时间状语连用;现在完成时通常与模糊的时间状语连用,或无时间状语.一般过去时的时间状语:yesterday,last week,ago,in1990,in October,just now 具体的过去时间状语 现在完成时的时间状语:for,since,so far,ever,never,just,yet,till/until,up to now,in the past few ye
16、ars,recently,模糊的时间状语 6、延续动词与非延续性动词(1)非延续动词(瞬间动词、终止性动词):表示的动作有一个终点,到了终点就不能再延续。因此,在现在完成时中,这种动词不能与表示延续的时间状语连用.在肯定句中与表示时间点的状语连用,如:two years ago;at 5 oclock;常用的瞬间动词:arrive、begin、borrow、buy、come、die、go、join、leave、lose、marry、stop Eg:Ive left Shanghai for 3 days.()Ive been away from Shanghai for 3 days.()注意
17、:如果现在完成时的谓语动词是终止性动词的否定式,则一般可以和表示一段时间的短语连用。因为终止性动词的这种否定式已变成一种可以延续的状态。(2)延续性动词表示能够延续的动作,如:learn,work,stand,lie,know,walk,keep,have,wait,watch,sing,read,sleep,live,stay 等。延续性动词可以与表示时间段的状语连用。表示时间段的短语有:for+一段时间:for 2 years;since 从句,since he came here;since+时间点名词,since last year,since 5 days ago;how long;
18、for a long time 等.延续性动词与非延续性动词之间的转换 leave-be away buy-have join be in begin/start-be on die-be dead finish-be over fall ill be ill get up-be up catch a cold-have a cold come here be here go there-be there become-be come back-be back fall asleep-be asleep get to/arrive/reach-be(in)leave-be away from
19、go(get)out be out put on wear go be there get upbe up borrow/lendkeep 三、过去完成时 1、概念:表示在过去的过去已经发生或完成了的动作或状态。即过去的过去。2、结构:had+过去分词 3、时间状语:(1)和 already just ever yet 等连用,表示过去的过去。Eg:He told me his team had already won.他告诉我他们队已经赢了。Eg:I heard that the predident had just arrived here.我听说院长刚刚到达。(2)过去完成时与 by t
20、hen(截止到那时),by 9 oclock(直到 9 点之前),by the end of-(在-末之前)by the time-(在-时之前),up till then(直到那时),up till last night(直到昨晚)Eg:By the end of 2007 many buildings had been built in the city.截止到 2007 年底,在这所城市盖起了许多新的建筑。Eg:By the time he came here he had been a famous doctor.他到这儿之前已经是很有名的医生了。(3)与 when,before,af
21、ter,as soon as,till,until 等引导的时间状语从句连用,强调动作发生的时间前后。Eg:When she got home,her childern had slept.她到家时她的孩子们已经入睡了。Eg:When she had finished her job,she went to sleep。当她把所有的事情做完之后,她睡觉去了。现在完成时专项习题 一、单项选择 1、Both his parents look sad.Maybe they _whats happened to him。knew .have known .must know .will know 2、
22、He has _ been to Shanghai,has he?.already .never 。ever 。still 3、Have you met Mr Li _?.just 。ago .before .a moment ago 4、The famous writer _ one new book in the past two year.。is writing .was writing .wrote .has written 5、Our country _ a lot so far。Yes。I hope it will be even _.。has changed;well 。chan
23、ged;good 。has changed;better 。changed;better 6、Zhao Lan _already _in this school for two years.。was;studying .will;study 。has;studied 。are;studying 7、We _ Xiao Li since she was a little girl.。know 。had known .have known .knew 8、Harry Potter is a very nice film。I_ it twice.。will see 。have seen .saw 。
24、see 9、By the time I got to the cinema,the movie_for ten minutes。A。had begun B。had been on C。has started D。has been on 10、_ you _ your homework yet?Yes。I _ it a moment ago。Did;do;finished .Have;done;finished 。Have;done;have finished .will;do;finish 11、His father _ the Party since 1978。joined .has joi
25、ned 。was in .has been in 12、Do you know him well?Sure.We _ friends since ten years ago。.were .have been .have become 。have made 13、-How long have you _ here?About two months.been .gone .come .arrived 14、Hurry up!The play _ for ten minutes.。has begun .had begun 。has been on 。began 15、By the end of la
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