現(xiàn)在完成時 (3)

1、The Present Perfect Tense一.Form:1.肯定句肯定句:S (主語主語)+have/has+PP(過去過去分詞分詞)2. 否定句否定句:S (主語主語)+have/has+not +PP(過去分詞過去分詞)3.疑問句疑問句Have/has+ S (主主語語)+PP(過去分詞過去分詞)? Yes, S+have/has.No, S+have/hasnt.說明說明：助動詞助動詞have和和has可前面可前面的主語縮略為的主語縮略為ve,s.如如 theyve, weve, hes, its; has not=hasnthave not=havent二、二、過去過去分詞的構(gòu)

2、成分詞的構(gòu)成1.+ed work, plant,call2.e+d live, change,like,love,agree,save hate, move,arrive, skate,hope, use3.以重讀閉音節(jié)結(jié)尾，以重讀閉音節(jié)結(jié)尾，末尾只有一個輔音字末尾只有一個輔音字母的母的 雙寫雙寫ed. 如：如：plan, stop,drop,fit(適適合合), prefer(更喜歡更喜歡), travel。以。以輔音字母輔音字母y，結(jié)尾結(jié)尾，變，變y為為iedtry, study, carry, hurry, cry, worry,copy三、特征詞三、特征詞already(肯定句肯定句)

3、 yet(否定句和疑問句否定句和疑問句)never，ever(疑問句疑問句)just (謂語動詞之前謂語動詞之前) before(句末）句末）in the past/last few years, (過去幾年來過去幾年來)so far= up to now,till now,by nowthese dayssince/ever sincefor+ 時間段時間段 四、用法四、用法1.表示過去發(fā)生的某一動表示過去發(fā)生的某一動作對現(xiàn)在造成的影響或作對現(xiàn)在造成的影響或結(jié)果。結(jié)果。I have already seen the film. Jim has just lost his book.四、四、2

4、.常和表示從過去某一時刻常和表示從過去某一時刻延續(xù)到現(xiàn)在的一段時間的狀語連延續(xù)到現(xiàn)在的一段時間的狀語連用用.如：如：for+時間段時間段 for12 weeks/three minutessince+ 時間點時間點( (起點起點) )since 9 oclock this morningsince一段時間一段時間agofor時間時間段段; since two weeks ago=for two weeks;for a year=since a year ago; since 2000=for 4 years since+從句從句(常常用一般過用一般過去時去時)The Greens have l

5、ived in Beijing since they moved to Beijing from Paris. 時態(tài)填空：時態(tài)填空：1.-Are you sure you _(lose) the book?-Yes, I _(look) for it everywhere, but I still cant find it.have losthave looked2.We _ already _(copy) these words.havecopied3. Jim _(just, watch) a football match. He is so tired and hungry.has ju

6、st watched4. _you ever _(travel) on a train?Havetravelled5. -_ they _(see) the film yet?-Yes.They_(see) it already.-When_they_(see) it? -They _(see)it just now.-Haveseenhave seendidseesaw6.- _ her sister _(be) to Nanning?-No,she_( never,be) there before.Hasbeenhas never been五。瞬間動詞和延續(xù)性五。瞬間動詞和延續(xù)性動詞的轉(zhuǎn)換動詞的轉(zhuǎn)換open- be open; close- be closed; begin- be on; finish,end-be overbecome-be; join-be a member of be in; die-be dead; get up-be up; comearrivereachget to - be in/be here; catc