1、unit 10 ive had this bike for three years. a(grammar focus_4c),否定,have not (havent) has not (hasnt),疑問(wèn),have ? has ?,肯定,1、現(xiàn)在完成時(shí)的構(gòu)成：,2、 句式,yes, have/has. no, have/hasnt.,答語(yǔ),have / has + vt. 過(guò)去分詞(pp),3、現(xiàn)在完成時(shí)的兩種主要用法,1.過(guò)去發(fā)生的動(dòng)作對(duì)現(xiàn)在造成的影響或結(jié)果。,2.過(guò)去已經(jīng)開始，持續(xù)到現(xiàn)在的動(dòng)作或狀態(tài)。,had breakfast,i have already had my breakfas

2、t.,(現(xiàn)在我不餓),im not hungry now,moved here in 2009,i still live here,i have lived here for three years.,i have lived here since 2009/three years ago.,now,past,time,1.for+時(shí)間段 2.since+時(shí)間點(diǎn)（過(guò)去） 3.since+一段時(shí)間+ago=for+時(shí)間段 4.since+從句（常用一般過(guò)去時(shí)） 5.its+一段時(shí)間+since(過(guò)去時(shí)的句子),since 和for 用法小結(jié)：,用法小結(jié)：非延續(xù)性動(dòng)詞又叫瞬間性動(dòng)詞或終止性動(dòng)詞，它

3、們可用于完成時(shí)態(tài)，但不能與for、 since 等表示一段時(shí)間的狀語(yǔ)連用,也不能和how long 問(wèn)句連用，如果要和一段時(shí)間狀語(yǔ)連用，應(yīng)將它們轉(zhuǎn)化成相應(yīng)延續(xù)性動(dòng)詞。,非延續(xù)性動(dòng)詞與延續(xù)性動(dòng)詞的轉(zhuǎn)化,改錯(cuò):,how long have you become a league member？ for more than one year. have you arrived here since last night. yes，youre right. the dog has died for a month. he has gone to shanghai twice. how long hav

4、e you been at this school? since two years .,been,been,been dead,been,ago.,for,非延續(xù)性動(dòng)詞和延續(xù)性動(dòng)詞的轉(zhuǎn)換,leave be away borrow keep buy have begin/start be on die be dead finish - be over open sth keep sth open fall ill be ill,get upbe up, come here be here, join be on +組織機(jī)構(gòu) /be a member 組織機(jī)構(gòu), go there be ther

5、e, become be, come backbe back, fall asleep be asleep,get to/ arrive/reach be (in), leave be away from, get to know know, go (get) out tie out， put onwear, catch a cold have a cold, get marriedbe married 等。,jim is in japan. he arrived there three days ago. _ 2. they are very hungry. their last meal

6、was ten hours ago. _,4a rewrite the sentences using for or since.,jim has been in japan for three days.,they havent eaten for ten hours.,3. i have a camera. i bought it in 2009. _ 4. i know anna. i first met her three years ago. _ 5. linda is ill. she became ill on monday. _,i have had a camera sinc

7、e 2009.,i have known anna for three years .,linda has been ill since monday .,1. i _ (never be) to the water park before. i want to _ (go) next month before the weather gets too cold. 2. they_(never own) any pets, but they _ (always want) to have a dog. 3. we_ (have) a piano since last november. we

8、_ (buy) it from the li family when they moved to the us last year.,4b fill in the blanks with the correct forms of the verbs in brackets.,have never been,go,have never owned,have always want,have had,bought,4. cathy and amy _ (not be) back to their hometown for two years. they _ (miss) their hometow

9、n a lot and hope to visit the place next year. 5. this museum _ (be) here for over 20 years. it _ (be) one of the oldest buildings in this small town.,havent been,miss,has been,is,4c fill in the questions and ask two students. then complete the chart.,1. do you have a (n)_? how long have you had it?

10、 2. do you own a (n)_? how long have you owned it?,tony has his favorite book for two years and he has owned his basketball since he was 10 ten years old.,選擇for或since填空： i have been here _five months ago. 2. he has been a soldier _ about two months. 3. great changes have taken place _ you left. 4. h

11、is grandpa has been dead _ ten years. 5. i have studied english _ i was 12 years old. 6. it is two years _ i became a postgraduate student.,since,for,since,for,since,since,即學(xué)即練,練習(xí)題: its a long time since we _ (meet) last, isnt it? 2. -i know you _ (choose) a picture book among these. -yes, have a look at it, please. 3. so far, spaceships without people _ (reach) the moon and some other parts of the universe. 4. my father_ home for nearly three weeks.a. ha