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現(xiàn)在完成時課件免費(fèi)

時間:2021-06-10 18:35:57 課件 我要投稿

現(xiàn)在完成時課件免費(fèi)

  現(xiàn)在完成時課件免費(fèi)

  教學(xué)過程

現(xiàn)在完成時課件免費(fèi)

  一、復(fù)習(xí)預(yù)習(xí)

  1.引入:I have read this book twice. Read 動作發(fā)生在過去。

  2.現(xiàn)在完成時的動作發(fā)生在過去,對現(xiàn)在造成的影響。

  3.現(xiàn)在完成時結(jié)構(gòu)中have/has的作用:通過do/dose/be等聯(lián)想法推導(dǎo)出have/has的語法能。

  二、知識講解

  本節(jié)課主要知識點(diǎn)解析,中高考考點(diǎn)、易錯點(diǎn)分析

  考點(diǎn)/易錯點(diǎn)1

  基本結(jié)構(gòu):助動詞have/has+過去分詞(done)

  否定句:主語+have/has+not+過去分詞+其他.

  一般疑問句:Have/Has+主語+過去分詞+其他.

  簡略答語: Yes, 主語 + have/has.(肯定) No, 主語 + haven't/hasn't.(否定) 用法

  (1)現(xiàn)在完成時表示過去發(fā)生或已經(jīng)完成的動作對現(xiàn)在造成的影響或結(jié)果

  I have spent all of my money (so far).(含義是:現(xiàn)在我沒有錢花了.)

  Guo zijun has (just/already) come. (含義是:郭子君現(xiàn)在在這兒)

  My father has gone to work.(含義是:我爸爸現(xiàn)在不在這兒)

 。2)現(xiàn)在完成時可以用來表示發(fā)生在過去某一時刻的,持續(xù)到現(xiàn)在的動作(用行為動詞表示)或狀態(tài)(be動詞表示),常與for(+時間段)或since(+時間點(diǎn)或過去時的句子)連用.

 、賔or+時段

  ②since+過去一個時間點(diǎn)(譯為:自從以來)

 、踫ince+時段+ago

 、躶ince+從句(過去時)

  ⑤It is+時段+since+從句(過去時) Mary has been ill for three days. I have lived here since 1998.

  考點(diǎn)/易錯點(diǎn)2

  現(xiàn)在完成時和一般過去式的區(qū)別:

  一般過去時和現(xiàn)在完成時所表示的動作都發(fā)生在過去,那么這兩種時態(tài)有什么區(qū)別呢? ①一般過去時常與具體的表示過去的時間狀語如yesterday, last year, just now等連用;強(qiáng)調(diào)動作在過去發(fā)生,與現(xiàn)在無關(guān)。

 、诂F(xiàn)在完成時與自已的特征詞already ,yet ,just ,ever ,never,before等連用,強(qiáng)調(diào)過去發(fā)生的動作對現(xiàn)在的影響或過去開始發(fā)生一直持續(xù)到現(xiàn)在的動作。

  例: He saw the film last night. (過去時,表示他昨晚看過那部電影了,現(xiàn)在不知還要不要再看一次)

  He has (ever) seen the film before.(現(xiàn)在完成時,表示他已看過那部電影,現(xiàn)在不想再看了)

  ③現(xiàn)在完成時可表示持續(xù)到現(xiàn)在的動作或狀態(tài),動詞一般是延續(xù)性的。如:live, work,study等。而一般現(xiàn)在時對動詞是否延續(xù)無任何要求。

  時間狀語的區(qū)別:

  除了我們講過的already, yet, still,just, ever, never, since短語和 for短語外,還有許多時間狀語常用于現(xiàn)在完成時,我們要留心將它們和一般過去時的時間狀語區(qū)分開來:

  1. lately, recently是完成時的時間狀語;just now 有a moment ago 之意,是過去時的時間狀語。如:

  Have you heard from your family lately/recently? Did you see Joan just now?

  2. in the past few years 意思是“過去幾年來”,常用于完成時中;in the past意思是“在過去”,常用于過去時中。 如:

  Great changes have taken place in my hometown in the past few years.

  Where did you work in the past?

  3. ever since then與from then on / after that 都有“打那以后”之意,但前者常用于完成時,而后兩者常用于過去時。如:

  She's lived here ever since then. I didn't hear of Jim from then on/after that.

  4. before 通常用于完成時;...ago通常用于過去時。如:

  I have never been to Japan before. She went to Japan two years ago.

  5. so far“到目前為止”, these days“這些天來”也是現(xiàn)在完成時常見的時間狀語。如: So far, no man has travelled farther than the moon.

  What have you done these days?

  考點(diǎn)/易錯點(diǎn)3:

  現(xiàn)在完成時動詞持續(xù)性用法

  持續(xù)性用法(肯定句,疑問句中謂語動詞必須是延續(xù)性動詞):表示過去已經(jīng)開始,持續(xù)到現(xiàn)在的動作或狀態(tài)。此時常與“for +一段時間或“since+過去的點(diǎn)時間或從句(從句用一般過去時)以及so far(到目前為止)等時間狀語連用。

  for + 段時間 / since +點(diǎn)時間

  例:

  1)I've lived here since 1990.自從1990年以來我就住在這里。

  = I've lived here since 21 years ago.

  = I've lived here for 21 years.

  = It is 21 years since I began to live here.

  注意:①在這類句子的肯定句和疑問句中謂語動詞必須用延續(xù)性動詞。短暫性動詞由于動作不能持續(xù),故不能與for(達(dá)到;累計(jì))或since(自從。。。到現(xiàn)在)引出的時間狀語連用。 ②對for和since引導(dǎo)的時間狀語提問要用How long

  1) 他入團(tuán)兩年了。

  誤:He has joined the League for two years.

  正:He has been a League member for two years.

  區(qū)別:have been in, have been to 與have gone to 的用法

  1. have(has) been in 意為“已經(jīng)在某地呆了多長時間”,常與表示一段時間的狀語連用。如:

  Mr. Brown has been in Shanghai for three days. 布朗先生來上海已經(jīng)有三天了。 They have been in Canada for five years. 他們到加拿大有五年了。

  2. have(has) been to意為“曾經(jīng)去過某地”,表示現(xiàn)在已經(jīng)不在那里了?膳cjust, ever, never等連用。 如:

  I've just been to the post office. 我剛才去郵局了。

  Have you ever been to Hangzhou? 你曾經(jīng)去過杭州嗎?

  Mary has never been to the Great Wall. 瑪麗從未去過長城。

  3. have(has) been to 后面可接次數(shù),表示去過某地幾次。如:

  I've been to Beijing three times. 我去過北京三次。

  They have been to that village several times. 他們?nèi)ミ^那個村莊好幾次了。

  4. have(has) gone to 意為“到某地去了”,表示到了某地或正在去某地的途中。 總之,說話時該人不在現(xiàn)場,一般不用第一、第二人稱代詞作句子的主語。如: ---Where is Tom? ---He has gone to the bookshop. 他到書店去了。

  三、例題精析

  【試題】3~5道

  【例題1】

  【【題干】Both his parents look sad . Maybe they _________what's happened to him .

 。. knew B. have known C. must know D.will know

  【答案】B

  【解析】現(xiàn)在完成時主要強(qiáng)調(diào)過去發(fā)生的動作對現(xiàn)在造成的影響,或過去發(fā)生的'動作還未結(jié)束,一直持續(xù)到現(xiàn)在或?qū)恚攸c(diǎn)在于對現(xiàn)在的影響。這種考查難度較大,往往無時間狀語,需要從上下文分析、推理才行。正確答案是B。

  【例題2】

  【題干】Harry Potter is a very nice film .I_______ it twice .

  A. will see B. have seen C. saw D.see

  【答案】B

  【解析】現(xiàn)在完成時還與once(一次),twice(兩次),three times(三次),several times(幾次)等表示重復(fù)次數(shù)的詞語連用。故應(yīng)選B。

  【例題3】

  【題干】—These farmers have been to the United States .

  —Really ? When _____ there ?

 。. will they go B. did they go C. do they go D. have they gone

  【答案】B

  【解析】現(xiàn)在完成時與一般過去時容易混淆,就是因?yàn)樗鼈兯硎镜膭幼鞫及l(fā)生在過去,但二者又有區(qū)別:一般過去時表示過去某個時間發(fā)生的事存在的狀態(tài)或經(jīng)常發(fā)生的動作,說話的側(cè)重點(diǎn)在于陳述一件過去的事情,與現(xiàn)在沒有關(guān)系;現(xiàn)在完成時表示與現(xiàn)在有關(guān)系的發(fā)生在過去的動作,它不與表示過去的時間狀語(如yesterday , last week , a moment ago等)連用。故正確答案為B。

  四、課堂運(yùn)用

  【基礎(chǔ)】 1. Both his parents look sad . Maybe they _________what's happened to him . A. knew B. have known C. must know D.will know

  2. He has _______ been to Shanghai , has he ?

 。. already B.never C.ever D. Still

  3. Have you met Mr Li ______?

 。. just B. ago C.before D. a moment ago

  答案及解析:

  1、現(xiàn)在完成時主要強(qiáng)調(diào)過去發(fā)生的動作對現(xiàn)在造成的影響,或過去發(fā)生的動作還未結(jié)束,一直持續(xù)到現(xiàn)在或?qū),重點(diǎn)在于對現(xiàn)在的影響。這種考查難度較大,往往無時間狀語,需要從上下文分析、推理才行。故上兩側(cè)根據(jù)上下文分析、推理,正確答案是B。

  2、現(xiàn)在完成時常與already(已經(jīng)),just(剛剛,正好),ever(曾經(jīng)),never(從來,也不;從不),before(以前),yet(仍然)等連用。故2應(yīng)選B。

  3、C

  【鞏固

  1. The famous writer _____ one new book in the past two year

  A. is writing B.was writing C.wrote D.has written

  2. -Our country ______ a lot so far . -Yes . I hope it will be even ______ . A. has changed ; well B. changed ; good

 。. has changed ; better D. changed ; better

  3. Zhao Lan ______already ______in this school for two years .

 。. was ; studying B. will ; study C. has ; studied D. are ; studying

  答案及解析:

  1、現(xiàn)在完成時常與recently(近來),so far(到目前為止),in the past/"last + 一段時間"等時間狀語連用。因?yàn)樯鲜龆陶Z表示的是從現(xiàn)在起往前推算的一段時間,句中的動作是從過去某一時間或時刻開始持續(xù)到現(xiàn)在的。故2應(yīng)選D。

  2、C

  3、現(xiàn)在完成時時常與"for +時間段或since +過去時間點(diǎn)"連用(含從句,從句過去時)。故3應(yīng)選C。

  【拔高】 1. We ______ Xiao Li since she was a little girl .

  A. know B. had known C. have known D. knew

  2. Harry Potter is a very nice film .I_______ it twice .

 。. will see B. have seen C. saw D.see

  3. -These farmers have been to the United States .

  -Really ? When _____ there ?

 。. will they go B. did they go

  C. do they go D. have they gone

  答案及解析:

  1、C

  2、現(xiàn)在完成時還與once(一次),twice(兩次),three times(三次),several times(幾次)等表示重復(fù)次數(shù)的詞語連用。故2應(yīng)選B。

  3、現(xiàn)在完成時與一般過去時容易混淆,就是因?yàn)樗鼈兯硎镜膭幼鞫及l(fā)生在過去,但二者又有區(qū)別:一般過去時表示過去某個時間發(fā)生的事、存在的狀態(tài)或經(jīng)常發(fā)生的動作,說話的側(cè)重點(diǎn)在于陳述一件過去的事情,與現(xiàn)在沒有關(guān)系;現(xiàn)在完成時表示與現(xiàn)在有關(guān)系的發(fā)生在過去的動作,它不與表示過去的時間狀語(如yesterday , last week ,

  a moment ago等)連用。故3的正確答案為B。)

  課程小結(jié)

  1. 現(xiàn)在完成時的定義

  2. 現(xiàn)在完成時里表示一段時間的延續(xù)性動詞以及連續(xù)性動詞的用法

  3. 現(xiàn)在完成時和一般過去時對比和總結(jié)

  課后作業(yè)

  【基礎(chǔ)】

  1. -______ you ___ your homework yet ?

  -Yes . I _____ it a moment ago .

 。. Did ; do ; finished B. Have ; done ; finished

  C. Have ; done ; have finished D. will ; do ; finish

  2. His father ______ the Party since 1978 .

 。. joined B. has joined C. was in D. has been in

  3. -Do you know him well ?

  Sure .We _________ friends since ten years ago .

  A. were B. have been C. have become D. have made

  答案及解析:

  1、B

  2、現(xiàn)在完成時中,非延續(xù)性動詞不能與for和since引導(dǎo)的表示一段時間的狀語連用,通常是用相應(yīng)的延續(xù)性動詞來代替。故11的正確答案依次為:D。

  3.B

  【鞏固】

  1. -How long have you ____ here ?

  -About two months .

 。. been B. gone C. come D. arrived

  2. Hurry up! The play __________ for ten minutes .

 。. has begun B. had begun C. has been onD. Began

  3. It _____ ten years since he left the army .

  A. is B. has C. will D. Was

  答案及解析:

  1、A 2、C 3、A。

  【拔高】

  1. Miss Green isn't in the office . she_______ to the library .

 。.has gone B. went C.will go D. has been

  2. My parents ______ Shandong for ten years .

 。. have been in B. have been to

  C. have gone to D. have been

  3. The students have cleaned the classroom, __________?

  A. so they B. don't they C. have they D. haven't they

  答案及解析:

  1、"have/has gone to + 地點(diǎn)"表示"某人去了某地(還未回來)",指主語所指的人不在這兒。"have/has been in + 地點(diǎn)"表示"在某地呆了多長時間",常與表示時間的狀語連用。"have/has been to +地點(diǎn)"表示"曾經(jīng)去過某地(但現(xiàn)在已不在那兒)。"故16的正確答案為A。

  2、A

  3、D

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