教案E.g, He has Seen the film SeVeraI times. 这部电影他已经看了好几次了。
（已完成）E.g. I have known her for a Iing time. 我认识她很长时间了。
（未完成）否定句：主语+have∕has+not+过去分词+其他一般疑问句：have∕has+not+ 主语+过去分词+其他（四）常用时间状语：“ Since+ 时间” ，“for+ 时间段” 及 how long, Since, ever, never, already, yet, twice, so far, UP to now, over the years, in the last/PaSt few years.1. Since表示“自从 ... 以来”时，无论是用作介词、连词还是副词，SinCe通常要与现在完成时连用。
如：I' Ve had nothing to eat SinCeIunChtime. 从中午至U现在我什么都没吃。
It has bee n a long time SinCe the TFbOyS foun ded. TFbOyS 成立很久了。
It has ten years Since he left here. 他离开这儿已 10 年了。
2. In the last few years/ in the PaSt few years ,“在过去的几年”表示从现在算起的过去一段时间内，通常要与现在完成时连用。
如：The house has Cha nged hands three times in the last two years. 在过去的两年中，这栋房子已转手三次。
I' Ve Seen little of her in the PaSt few weeks. 近几周我很少见到她。
3. OVer the years “这些年来”“经过这么多年之后” “最近几年”，通常表示从现在算起的过去几年。
She' S brought US so much happ in ess over the years. 这些年来，她给我So far/Up to now 500 people have died in the earthquake.已有500人在地震中丧生注意：与表示次数的once,twice,three times 等连用是，只能用HaVe been to.She has bee n to EurOPe twice. 他到欧洲去过两次。
另外，have been to 除了可接地点表示去过某地外，有时可以接活动，表示去 参加过某种活动，或接动词原形（尤其是动词 See ），表示去做某事。
如：She' S just been to a party. 她刚参加了晚会回来。
He has n ever bee n to See me SinCe I have bee n ill. 我生病以来他从未来看过我。
（六）现在完成时的肯定句中 瞬间动词（buy,die,join, come,go leave,join...）不能直接与fo 叶时间段，Since+时间点连用。
要将其改为延续性动词。
口诀：开始离去，借来还，出生入死，买到家。
+开关结束Beg in, leave,go,borrow,come,retur n, Ieavejo in, die,buy,arrive.3. 用 be 代替 become How long has your SiSter bee n a teacher?Beg in-- be oncome/arrive/reach/join leave-- be awayOPen--be ope n1. HaVe 代替 buyMy brother has had 2. Keep/haveI have kept go out---be out -be in die--be dead close---be closed （不能用 has bought 代替borrow （不能用 haveborrowed borrow--keep RetUrn--COme back to Buy--have finish ——be over ）this bike for almost four years. the book for quite a few day.4. 用 have a cold 代替 CatCh a coldTom has had a cold SinCe the day before yesterday.教学练习一、判断以下句子的时态。
1. He is a worker.2. I Played basketball yesterday.3.1 'e WaShed the car.4. My father goes to WOrk by Car every day.5. Xiao Ling always StUdieS hard.6. You and I will work in the Same factory.7. Jia Min SOmetimeS plays COmPUter games.8. She is reading an English book.9. My mother is going to Shanghai tomorrow.10. Shall I get your coat for you?11. You should take the medicine three times a day.12. I am never late for school.13. What WaS She doing at nine o ‘ clock yesterday?14. Rose usually goes shopping With her mother.二、单项选择。
1、 _________________________________________ Both his Parents look sad. Maybe they __________________________________ What S happened to him .A . knewB . have knownC . must know D. will know2、 He has _______ b een to Shanghai, has he?A . alreadyB . neverC . everD . still3、 _______________________ HaVe you met Mr. Li ?A. just B . ago C .before D .a moment ago4、 _____________________ T he famous Writer one new book in the PaSt two year .A . is WritingB .was WritingC .wroteD .has Written5、一 OUr COUntry _____ a lot so far . — Yes. I hope it will be eve nA . has Changed ; wellB . Changed; goodC . has Changed ; better D. Changed; better6、 _______________ Z hao Lan _____ already in this school for two years .A . was; StUdyingB . will; StUdyC . has; StUdied D. are; StUdying7、 We ______ Xiao Li SinCe She WaS a little girl .A . knowB . had knownC . have knownD . knew8、Harry POtter is a Very nice film. I it twice .A. will See B . have Seen C. SaW D .see9、一 TheSe farmers have been to the United StateS — Really? When ______ there?A . will they goB . did they goC . do they goD . have they gone10、一_____ y ou ___ your homework yet ?A . Did; do; finiShedB .C . Have; done; have finiShedD .11. ______________ His father the Party Since 1978 .A . ioinedB . has ioined—Yes. I _____ i t a mome nt ago Have; done; fini Shed will; do; finish C . WaS in D. has bee n in—Sure .We frie nds SinCetenC . have becomeD . have made11、一 How IOng have you hereA . beenB . gone12、 HUrry up! The play ________ for ten minutes.A . has begUnB . had begUnC . has been onD . Began13、 It _____ t en years SinCe he left the army . A . is B . has C . will D . WaS14、MiSS Green isn't in the office. She __ to the library. A . has gone B . Went C .will go 17、My Parents ______ ShandOng for ten years.A . have been inB . have been toC . have gone to 15、TheStUdents have cleaned the CIaSSroom, ?A. so theyB. don' t theyC. have theyD. haven' t they 19has Mr White bee n a member of Gree ner China SinCe heto Chi na?A. How soon, comesB. How often, gotB. C. How long, CameD. How far, arrived 20、HiS Un clefor more tha n 9 years.A. has come hereB. has Started to work B. has lived thereD. has left the UniVerSity三、句型转换。