1、現(xiàn)在完成時(shí)1、現(xiàn)在完成時(shí)的構(gòu)成：現(xiàn)在完成時(shí)是由“助動(dòng)詞have/has+動(dòng)詞過去分詞”構(gòu)成的。助動(dòng)詞have/has可以與主語縮寫為ve/s。. I have Ive We have Weve He has Hes It has Its規(guī)則變化的過去分詞與動(dòng)詞過去式一樣。不規(guī)則變化的動(dòng)詞過去分詞見表。2、現(xiàn)在完成時(shí)的基本句型。陳述句肯定形式。. I have had lunch. 我已經(jīng)吃過午飯了。He has gone to Beijing. 他去北京了。陳述句否定形式。(在助動(dòng)詞have/has后+not，可縮寫為havent/hasnt). I havent had lunch. 我還未

2、吃午飯。He hasnt gone to Beijing. 他還沒有去北京。一般疑問句形式及其答語。(將助動(dòng)詞have/has提前，答語一般用have, has回答). Have you had lunch? 你吃過午飯了沒? Yes, I have. No, I havent. Has he gone to Beijing? 他去過北京了沒有? Yes, he has. No, he hasnt.否定回答還可以用：No, not yet. / No, never. / No, not even once等。特殊疑問句形式。(疑問詞+一般疑問句). Where has he gone? 他去了

3、哪里?3、現(xiàn)在完成時(shí)的三個(gè)基本用法。(1) 現(xiàn)在完成時(shí)的第一個(gè)基本用法表示過去發(fā)生或已完成的某一個(gè)動(dòng)作對(duì)現(xiàn)在造成的影響或結(jié)果。. Have you had lunch? Yes, I have. Ive just had it. 你吃過午飯沒?有，吃過了，我剛剛吃的。(影響及結(jié)果：我現(xiàn)在飽了，不需要了)He has gone to Beijing. 他已經(jīng)去北京了。(影響及結(jié)果：他人現(xiàn)在不在這里了)該用法常already(已經(jīng)), never(從不), ever(曾經(jīng)), yet(仍然), just(剛剛), before(以前)等副詞(作狀語)連用。 already, just, ever,

4、 never常用于助動(dòng)詞之后，實(shí)義動(dòng)詞之前。 already, just多用于肯定陳述句。. She has already finished her work. 她早已干完了活。Would you like to go to see the film? No, Ive seen it already.不，我已經(jīng)看過了。(already偶爾會(huì)出現(xiàn)于句末)They have just won a game. 他們剛剛贏了一場比賽。有時(shí)already可以用于疑問句，表示期待肯定回答，或表示驚訝、意外。. Have you finished reading the book already? 你真的

5、已經(jīng)讀完這本書了?(表示驚訝)ever多用于疑問句，問初次經(jīng)歷。. Have you ever spoken to a foreigner? 你跟外國人講過話嗎?(問初次經(jīng)歷)never多用于否定陳述句(注：本身表示否定意義). He has never done such a thing, has he? 他從來沒有做過這樣的事，不是嗎?(否定) yet一般用于疑問句(已經(jīng))或否定句(還)，常位于句末。. Have you got ready yet? 你已經(jīng)準(zhǔn)備好了嗎? He hasnt finished his homework yet. 他還沒完成作業(yè)。 before一般位于句末。.

6、I have never seen the film before. 以前我從未看過那部電影。 現(xiàn)在完成時(shí)的第一種用法常與以上的副詞連用，因此這些詞有時(shí)可以作為現(xiàn)在完成時(shí)的標(biāo)志詞。(2) 現(xiàn)在完成時(shí)的第二個(gè)基本用法表示過去已經(jīng)開始，持續(xù)到現(xiàn)在的動(dòng)作或狀態(tài)。該用法常和表示過去某一時(shí)刻延續(xù)到現(xiàn)在的一段時(shí)間的狀語連用。與for +一段時(shí)間連用，表示多久。. He has learned English for two years. 他已經(jīng)學(xué)習(xí)兩年英語了。I have been here for three days. 我在這里已經(jīng)3天了。與since +時(shí)間(起點(diǎn))連用，表示自以來。. His fa

7、ther has worked in that factory since 1991. 他爸爸自1991年以來都在這家工廠工作。Ive had a cold since last Friday. 自上星期五起我就感冒了。與since +一段時(shí)間+ ago連用，表示自以前就。. Jim has waited there since half an hour ago. 吉姆自半個(gè)小時(shí)前就已經(jīng)在那里等候了。He has stayed here since three weeks ago. 他在這兒已呆了三個(gè)星期。與since +從句(從句用一般過去時(shí))連用，表示自某事發(fā)生后就一直。 Greens h

8、ave lived in Beijng since they came to China. 格林一家自從來到中國后就一直住在北京。Ive known her since I came to work here. 自從我來這里工作就認(rèn)識(shí)他了。(3) 現(xiàn)在完成時(shí)的第三個(gè)基本用法表示到現(xiàn)在為止這一時(shí)期中多次動(dòng)作的總和或所做過的工作的量的積累。. I have been to Beijing twice. 我去過北京兩次。Weve learnt five English songs this year. 今年我們學(xué)了五首英語歌曲。How many pages of the book have you

9、read? 這本書你讀了多少頁了?4、延續(xù)性與非延續(xù)性動(dòng)詞在現(xiàn)在完成時(shí)態(tài)中的使用。(1)有一些動(dòng)詞是瞬間動(dòng)詞，也叫非延續(xù)性動(dòng)詞，這些動(dòng)詞一發(fā)生就結(jié)束了，常見的有：come, go, arrive, reach, leave, begin, start, buy, join, die, borrow, get up, become, open, stop等。這些動(dòng)詞雖然可以用于現(xiàn)在完成時(shí)(說明某個(gè)動(dòng)作的結(jié)果還存在)，但由于它們不能延續(xù)，因此不能跟表示一段的時(shí)間狀語連用。(也即現(xiàn)在完成時(shí)的第二個(gè)基本用法中不能使用非延續(xù)性動(dòng)詞)。. Jim has come back. (正) 吉姆已經(jīng)回來了。Ji

10、m has come back for a month. (誤) come back的動(dòng)作不能延續(xù)一個(gè)月，因此錯(cuò)誤。(2)瞬間動(dòng)詞不可以用于有段時(shí)間的現(xiàn)在完成時(shí)態(tài)中，因此，若要解決這一問題，就應(yīng)把它改為相應(yīng)的延續(xù)性動(dòng)詞或短語，主要有以下幾種：用相應(yīng)的延續(xù)性動(dòng)詞如： buy have borrow keep come/go/become be put on wear catch a cold have a cold 轉(zhuǎn)換成be+名詞如： join be a member of go to school be a student 轉(zhuǎn)換成be+形容詞或副詞如： die be dead leave b

11、e away begin be on finish be over fall asleep be asleep open be open get up be up close closed 轉(zhuǎn)換成be+介詞短語如： come to/go to/arrive in (at)/get to/reach be in/at join the army be in the army(軍隊(duì)). I have borrowed the book. 我已經(jīng)借了那本書。I have kept the book for two days. 我已經(jīng)借那本書兩天了。Jim has joined the band. 吉

12、姆已經(jīng)加入那樂隊(duì)了。Jim has been a member of the band for a month. 吉姆已經(jīng)加入那個(gè)樂隊(duì)一個(gè)月了。His grandfather has died. 他祖父已經(jīng)死了。His grandfather has been dead for 2 years. 他祖父已經(jīng)死了兩年了。My father has arrived in China. 我父親已經(jīng)到達(dá)中國了。My father has been in China for a week. 我父親已經(jīng)在中國一個(gè)星期了。(3)在否定句中，非延續(xù)性動(dòng)詞也可以與時(shí)間段連用。. I havent borrowe

13、d books from the library since last year. 自去年以來我就沒有在圖書館借過書。Jim hasnt come back for a year. 吉姆已有一年沒回來了。5、現(xiàn)在完成時(shí)的幾種常見的句型轉(zhuǎn)換?，F(xiàn)在完成時(shí)可以轉(zhuǎn)化成一般過去時(shí)，還可以轉(zhuǎn)化成“It is/has been +時(shí)間段+since從句(用一般過去時(shí))”等句型。. Jim has been back for a month. 吉姆已經(jīng)回來一個(gè)月了。 = Jim came back a month ago. 吉姆一個(gè)月前就回來了= It is/has been a month since Jim came back. 自吉姆回來已經(jīng)有一個(gè)月了。 = A month has passed since Jim came back. I have kept the book for two days. = I borrowed the book two days ago.= It is / has been two days since I borrowed the book. = Two days has passed since I borrowed the book.7、現(xiàn)在完成