8BUnit3Gramma.docx

8B Unit3 Grammar 导学目标：1,了解一般过去时和现在完成时的区别.2,能组织含有一般过去时和现在完成时的句子.【导入新课】Ask and Answer1 Have you ever been to Beijing?2when did you go to Beijing?3How many times have you been to Beijing?4have you ever bought a computer?5when and where did you buy it ?6how many times have you used it for an online tour?【自主学习】 ( )1. Have you finshed your homework Yes, I it last night(A)finish (B)finished (C)have finished (D)will finish( )2. you ever to Nanjing Yes, I there last year.(A)Havegone, have gone (B)Havebeen , went(C)Didgo, went (D)Didgo, has , been( )3.When you Lucy in New York? I here for two years(A)didmeet, havent seen (B)didmeet, havent seen(C)didmeet, dont see (D)wouldmeet, hadnt seen( )4.-when_ you to Beijing? How long you here?(A)havecome , havebeen (B)didcome , havebeen(C)didcome , didgo (D)didcome , have go【合作探究】1让学生翻到课本第40页,阅读该页内容,然后让学生进行总结,尝试说出一般过去时和现在完成时的区别.2complete PartA on page 41 and underline the different time expressions.3.学生完成B部分的练习,然后两人一组讨论答案.4学生完成D的练习.全班核对答案后,让学生说出选择该时态的理由.【精讲点拨】现在完成时与一般过去时的用法比较现在完成时表示过去的动作一直延续到现在甚至会继续下去或表示过去的动作对现在造成的影响；一般过去时表示动作发生的时间在过去。试比较：The plane has arrived . 飞机已经来了。（说明现在的情况：飞机在这儿）The plane arrived a quarter ago. 飞机是一刻中以前来的。（强调动作发生的时间在过去）I have taught here for fifteen years. 我在这儿已经教了十五年。（表示十五年前的动作一直延续到现在，还可能会继续。）I taught here for a year. 我过去在这儿教过一年。（表示“我“现在已经不在这儿任教了）When常与一般过去时连用，How long常与与现在完成时连用When did you come to Beijing?How long have you been in Beijing?【自主评价】一.单选 ( )1. Have you finshed your homework Yes, I it last night(A)finish (B)finished (C)have finished (D)will finish( )2. you ever to Nanjing Yes, I there last year.(A)Havegone, have gone (B)Havebeen , went(C)Didgo, went (D)Didgo, has , been( )3.When you Lucy in New York? I here for two years(A)didmeet, havent seen (B)didmeet, havent seen(C)didmeet, dont see (D)wouldmeet, hadnt seen( )4.-when_ you to Beijing? How long you here?(A)havecome , havebeen (B)didcome , havebeen(C)didcome , didgo (D)didcome , have gone( )5.Ive been like this ever snice (A)last week (B) for a week (C) a week before (D)the last week( )6.My mother has worked in this factory 2 years.(A)about (B)for (C)in (D)since( )7. I havent heard from him last week.(A)since (B) for (C)ago (D)before( )8His father joined the party_(A)for three years (B)since three years ago(C)three years ago (D)in two years time( )9.He moved here in 1999,and he has been here .(A)at that time (B)for five years ago(C)since four years (D)for four years( )10.Tom has been away from home about five days ago.(A) (B)in (C)since (D)for二.完型填空China is a country that is changing very quickly over the past fifty years and 1 you look closely(仔细地) you can see it 2 in front of your eyes. Fifty years ago, everybody travelled around by bike. Today lots of people in China still ride their bikes 3 school or work, but many people also take the bus or travel 4 underground. There are some people who even drive their own cars. Shops 5 small businesses but now the centre of Chinas cities are full of 6 department stores. In these department stores, you can buy 7 you want in one trip. You can buy food, toys, bikes and even televisions. Television is 8 change that China has seen. Many children would say that they can not imagine life 9 , but years ago they had to live without them. The Internet and the computer have only recently become regular items in our lives. Without the Internet, people would not 10 to get information as quickly as they can now and the Internet helps people 11 friends all over the world. Computers help 12 children and adults in their 13 lives Many students are lucky enough 14 able to use them to do their homework or 15 with their friends and sometimes play games. ( )( )( )( )( )( )( )( )( )( )( )( )( )( )( )1. A. even if2. A. be changing3. A. from4. A. with5. A. used to be6. A. large7. A. anything8. A. others9. A. with one10. A. can be able to11. A. being12. A. both13. A. every day14. A. be15. A. speakB. ifB. to changingB. to B. at B. is used to beingB. largerB. somethingB. one B without oneB. be able toB. to have beenB. allB. everydayB. beingB. chattingC. althoughC. changingC. in C. inC. used to isC. smallC. everythingC. th