现在完成时（初中）课件PPT

这是一份现在完成时（初中）课件PPT，共17页。PPT课件主要包含了 现在完成时的结构，现在完成时的用法，疑难点等内容，欢迎下载使用。
Present Perfect Tense 现在完成时
主语 + have/ has + 过去分词（pp）
Winter has already cme，
will it still be far in spring ?
否定形式 haven’t ( have nt ） +过去分词 hasn’t ( has nt ) +过去分词
疑问句 把助动词 have / has 放在句首
注：主语若是第三人称单数助动词用 has
Yu have planted all the trees.I have planted all the trees.He/she has planted all the trees.They have planted all the trees.
区别have 和 has的用法
主语若是第三人称单数助动词用 has
1) 表示到现在为止已经完成或刚刚完成的动作。Nw we have planted all the trees.He has just cme back. They have built many buildings in this city.
2) 表示过去发生的动作,强调结果或对现在的影响。Smene has brken the windw. (窗户现在是坏的)I have already lst the key. (我现在没有钥匙)I haven’t read that bk yet . (不了解书的内容)I have just cleaned my hands. (手是干净的)
常与already(已经), yet(已经), just(刚刚),ever(曾经)等词连用.
already: 常用于肯定句中. yet: 常用于否定句,疑问句尾.
3) 表示从过去开始并持续到现在的动作或状态，常与包括现在在内的一段时间的状语连用。She has learned English fr 5 years. He has lived in Beijing since 5 years ag.
since: (自…以来)1)since+时间点He has stayed here since 5 ’clck.2)since+ 时间段+ agHe has stayed here since 5 hurs ag.3)since+ 从句She has taught English since he came here. fr: (长达）fr+ 时间段He has kept the bk fr 2 weeks.
since , fr 的用法:
用fr 或since填空
Mr. Brwn has had his TV ______ 15 years. I’ve taken driving lessns _______last mnth. My sister has had her cell phne ______a mnth . My friends haven’t visited me ______few days ag. We haven’t used ur car _____ a lng time . She hasn’t had a gd cup f cffee _____years. Tm has wrn glasses _______he was 7 years ld.
注：并非所有fr作为时间状语的句子都用现在完成时 搞清一般过去时和现在完成时的区别
I wrked here fr mre than twenty years.(我现在已经不在这里工作了)I have wrked here fr mre than twenty years.（现在我仍在这里工作）
辨析 have been t和 have gne t
My father has gne t Shanghai fr a meeting.他（已经）去了上海。
My father has been t Shanghai fr a meeting.他（曾经）去了上海。
She has been t China . 她（曾经）去过中国。（人已经回来了）
have been t smeplace. 曾经去过某地，已经回来．has gne t smeplace.某人去了某地，还没有回来．
She has gne t China last week.上周她去了上海 。（人可能回来了也可能没回来）
用have/has been t, have/has gne t填空：1.—Where is yur brther? —He ____________ the shp. He’ll be back sn.2. — ______ yu ever _________ t America? —Yes, I ___________ New Yrk twice.3. —Here yu are at last! Where _____ yu _____? —I _____________ Lndn.4. —David _____________Australia. —I’m sure he’s already arrived.5. —Is Benny here? —N, he __________ the schl library. He left five minutes ag.
Have been t
have been t
have been
9. He ________ (g) t schl n ft every day. 10.____ yu ______ (find) yur science bk yet? 11. If it ____ (be) fine tmrrw, I'll g with yu. 12. The students ____________ (read) English when the teacher came in. 13. Lk! The mnkey __________ (climb) the tree. 14. My mther __________ (cme) t see me next Sunday. 15. I've lst my pen. _________ yu ________ (see) it anywhere?
were reading
is climbing
1. I____ already ____ (see) the film. I ________ (see) it last week. 2. _____ he ____ (finish) his wrk tday? Nt yet.3. My father ____ just ____ (cme) back frm wrk. He is tired nw.4. Where’s Li Ming ? He __________ (g) t the teacher’s ffice.5. I __________ (wrk) here since I ______ (mve) here in 1999.6. S far I _______________(make) quite a few friends here.7. Hw lng ________ the Wangs ______________(stay) here ? Fr tw weeks.8. I ________ just ___________ (finish) my hmewrk.
have, seen, saw
Has, finished
have wrked, mved
have, stayed
have, finished
1. have, seen, saw 2. Has, finished 3. has, cme 4. has gne 5. have wrked, mved 6. have made 7. have, stayed 8. have, finished 9. ges 10. have, fund 11. is 12. were reading 13. is climbing 14. is cming 15. Have, seen