高中英語 Unit 6 Design Section Ⅴ 單元語法突破課件 北師大版必修2 (18)

1、Section Grammar一二三四一、教材語句回顧,判斷黑體部分的時態(tài)1.It has been six years since we last saw each other,you know.你知道,自從上次我們見面到現(xiàn)在已經(jīng)6年了。時態(tài): 2.And this is the first time Ive visited your hometown.這是我第一次來你們家鄉(xiāng)。時態(tài): 3.You know,Ive seen quite a lot of China and Ive visited some beautiful cities,but this is one of the mos

2、t attractive places Ive been to.你知道,我已看過中國許多地方,游覽過一些美麗的城市,但這是我所到過的最有吸引力的地方之一。時態(tài): 現(xiàn)在完成時 現(xiàn)在完成時 現(xiàn)在完成時 一二三四4.Yes,theyve just completed it.是的,他們剛剛建完。時態(tài): 5.Theyve put up a lot of high-rise buildings recently.最近,他們建了許多高樓大廈。時態(tài): 現(xiàn)在完成時 現(xiàn)在完成時 一二三四二、用所給動詞的適當形式填空1.(2015北京高考改編)In the last few years,China (make) g

3、reat achievements in environmental protection.2. you (meet) Mr Li before?3.The famous writer (write) one new book in the past two years.4.Our country (change) a lot so far.5.Mary seems to have a fever.Dont worry.I (send) for a doctor and he is on the way.6.We (know) Lucy since she (be) a little girl

4、.has made Have met has written has changed have sent have known was 一二三四7.This is a very nice film.I(see) it twice.8.When I was at college,I (learn) two foreign languages but I (forget) almost now.9.You shouldnt leave school before you (finish) your homework.10.This is the third time I (see)you eati

5、ng chocolate today.have seen learned have forgotten have finished have seen 一二三四三、完成句子1.這是你爸爸第三次替你做功課了!This is the third time your father your homework!2.自從我上次來這里已經(jīng)有很長時間了。It I last came here.3.我在北京待了四年。I Beijing for four years.4.這支鋼筆我只用了三次。I this pen only three times.has done has been a long time si

6、nce have been in have used 一二三四四、短文填空Dear Mike,Im sorry I (not write)for a while.I (be)very busy.I (take)four exams this week.This weekend Im going to relax.Im going to eat dinner with my family at a new Italian restaurant.We (not be)to a restaurant recently,and I never (eat)Italian food.Im also goi

7、ng to visit the Great Wall.Believe it or not,I (live)here all my life but I never (be)there!Please write back and let me know what you (do) lately.I am looking forward to hearing from you.Your friend,Wanghavent written have been have been have been have eaten have lived have been have been doing Gra

8、mmarPresent perfect tenseHe has studied French for ten years.他學習法語已經(jīng)10年了。時態(tài):現(xiàn)在完成時組成:have/has+動詞的過去分詞一、現(xiàn)在完成時表示過去發(fā)生的動作對現(xiàn)在造成的影響。He has lost his wallet.他丟了錢包。用法:動作已結(jié)束,但是現(xiàn)在沒有錢花了。She has read the book twice.這本書她已經(jīng)讀了兩遍。用法:twice表示次數(shù),常與現(xiàn)在完成時連用。Up to the present everything has been going well.到目前為止,一切進展順利。用法:

9、up to the present意為“到目前為止”,與現(xiàn)在完成時連用。歸納:現(xiàn)在完成時往往同表示不確定的過去時間狀語連用,如:already,yet,just,before,recently,lately等,這種用法的動詞多為短暫動詞;還常與表示頻度的時間狀語如:often,ever,never,twice等連用;還可以同包括現(xiàn)在時間在內(nèi)的時間狀語如:now,up to now,so far,up to the present,till now,today等連用。考點延伸1)現(xiàn)在完成時與一般過去時的區(qū)別I wont go to see the film,because I have alre

10、ady seen it.我不會去看那部電影,因為我已經(jīng)看過了。I saw a film last week.上周我看了一部電影。歸納:現(xiàn)在完成時表示過去發(fā)生的動作對現(xiàn)在的影響,強調(diào)現(xiàn)在的情況,不與過去時間狀語連用;一般過去時只表示過去的動作或狀態(tài),與現(xiàn)在沒有關(guān)系,與過去時間狀語連用。2)句型:This/That/It is the+序數(shù)詞+time+從句This is the first time I have won in the game.這是我在游戲中第一次獲勝。歸納:句型中從句中用現(xiàn)在完成時。參考答案:1)has been reached2)has finished3)have set

11、4)have learnt/learned 5)Up to now,I(cover) twenty pages of the book.6)He never (meet) the man before.7)She (find)her pen yesterday.8)I (have)my dinner about half an hour ago.9)It is the second time I (visit)this beautiful city.10)What about your driving trip yesterday?Tiring!The road is being widene

12、d,and we(have)a rough ride.參考答案:5)have covered6)has;met7)found8)had9)have visited10)had二、現(xiàn)在完成時表示動作或狀態(tài)從過去開始,持續(xù)到現(xiàn)在(可能還會繼續(xù)下去,也可能剛剛結(jié)束)His brother has worked in this factory since 1990.他哥哥從1990年以來就在這家工廠工作?？键c延伸1)閱讀下列句子,指出與現(xiàn)在完成時連用的時間狀語及意義It has been three years since I began to live on the farm.自從我在農(nóng)場居住以來已

13、經(jīng)三年了。時間狀語:since引導的時間狀語從句意義:自從以來He left home two weeks ago and we havent heard from him since then/ever since.他兩星期以前離開了家,到現(xiàn)在我們一直沒有他的消息。時間狀語:since then/ever since意義:從那時以來 We havent had a vacation for a long time.我們好久沒放假了。時間狀語:for a long time意義:很長一段時間 What have you been busy with these days?這些天來你忙什么呢?時

14、間狀語:these days意義:這些天來 歸納:這種用法與表示一段時間的狀語如:for.,since.,these days,in/over the past 10 years,this year等連用。since后跟過去的時間點,since引導的時間狀語從句中用一般過去時;for后跟時間段。2)句型:It is/has been+時間段+since.It has been half a year since I saw you last.自從上次我見到你以來時間過了半年了。3)短暫動詞如:arrive,begin,borrow,buy,come,die,join,leave,finish等

15、不能與表示一段時間的狀語連用,如與時間段連用,須用相應(yīng)的持續(xù)性動詞如:be,have,keep等。I bought the new car a month ago.=I have kept/had the new car for a month.我買這輛新車已經(jīng)有一個月了。參考答案:1)have tried/have been trying2)has increased 3)In order to find the missing child,villagers (do) all that they can over the past five hours.4)I remember you were a talented pianist at college.Can you pla