1、Ive already had dinner. 2. He has just finished his homework. 3. Mums cooked the dinner.4. Susans learned English at school.,Have you already had dinner?,Has he just finished his homework?,Has mum cooked the dinner?,Has Susan learned English at school?,一 把下列句子改为一般疑问句。,二 选用for和since填空:1.We havent see
2、n each other _ a long time.2.His father has been in the factory _ 10 years ago.3.The film has been on _ 20 minutes.4.Mr Green has worked here _ he came to China.5.His grandparents have been dead _ several years.6. Its five years _ we met last time,for,since,for,since,for,since,三 动词填空：1._ you _(clean
3、) the room? Yes, we _(do) that already. When _ you _(do) it? We _(do) it an hour ago.2._ he _(see) this film yet? Yes. When _ he _(see) it? He _ it last week. 3. How many times _you _( come) here? Once.,Have,cleaned,have done,did,do,did,Has,seen,did,see,saw,have,come,4. I _ (read) the novel twice. I
4、ts interesting.5. She _ (go) to Pairs, hasnt she? Yes. How _ she _(go) there? She _(go) there by air.6. So far, many countries _(develop) their software programs.7.Mr Chen _(give) up smoking last year.8._ you ever _(ride) a horse? Never.9.He _( keep) the book since two days ago.,have read,has gone,d
5、id,go,went,have developed,gave,Have,ridden,has kept,for 和 since 在现在完成时中的应用,for与since都能与现在完成时连用，但区别较大：（1）for后须接“时间段” He has studied English for five years. 他学英语5年了。（2）since后须接“时间点” He has studied English since 1999. 他从1999年开始学英语。,（3）二者可以转换 for + 一段时间 = since + 一段时间 + ago He has been here for five wee
6、ks.= He has been here since five weeks ago. 他到这儿已经有五个星期了。,如：He has taught here since he came to China.自从他来到中国就在这儿教书。We have been friends since we met in school.我们从在学校见面起就成为了好朋友。,(4) since能引导时间状语从句(主句用现在完成时，从句用一般过去时)，而for则不能。,（6）均须与延续性动词连用，也可以与非延 续性动词的否定式连用。如:I have bought this computer since four ye
7、ars ago. ()I have had this computer since four years ago. ()I havent bought anything for two months.( )I havent heard from him for 3 weeks. (),非延续性动词和延续性动词的转换,leave be away borrow keepbuy have begin/start be ondie be dead finish - be overopen sth keep sth open fall ill be ill,get upbe up, come here
8、be here,join be on +组织机构 /be a member 组织机构,go there be there, 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。,The old man died 4 years ago. The
9、old man has been dead for 4 years. It is 4 years since the old man died.Four years has passed since the old man died. He joined the Party 2 years ago.He has been in the Party for 2 years.I bought the book 5 days ago.I have had the book for 5 days.,如：,（7）二者引出的时间状语往往用 how long提问。,How long have you had
10、 this book? 这本书你买多久了?For a week./Since a week ago. 买一周了。,Jim is in Japan. He arrived there three days ago. _2. They are very hungry. Their last meal was ten hours ago._,4a Rewrite the sentences using for or since.,Jim has been in Japan for three days.,They are very hungry because they havent had the
11、ir meal 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 since 2009.,I have known Anna for three years .,Linda has been ill since Monday .,1. I _ (never be) to the water park be
12、fore. 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 _ (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
13、 verbs in brackets.,have never been,go,have never owned,always want,have had,bought,4. Cathy and Amy _ (not be) back to their hometown for two years. They _ (miss) their hometown 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 bui
14、ldings in this small town.,havent been,miss,has been,is,选择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. His grandpa has been dead _ ten years.5. I have studied English _ I was 12 years old.6. It is two years
15、_ I became a postgraduate student.,since,for,since,for,since,since,即学即练,练习题: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. has gone away from B. has leftC. has been away from D. went away 5. Mr. and Mrs. Green have_ in China for a week. A. been B. got C. arrived D. reached,met,have chosen,have reached,C,A,
