《二模块三单元grammar》由会员分享，可在线阅读，更多相关《二模块三单元grammar（4页珍藏版）》请在金锄头文库上搜索。
1、1Unit Three Grammar Period One Present perfect tense祖军武、朱丽、万力新、李爱贞、方颖祖军武、朱丽、万力新、李爱贞、方颖Teaching aim: To give a brief introduction to the present perfect tense Teaching procedures: 1 Go over the news story on Page 2 and find the sentences using the present perfect tense.Please explain why the tense is
2、 used in these sentences. 2 The form of the present perfect tense 3 Talk about the uses of the present perfect tense A We use the present perfect tense to talk about things that happened in the recent past, but are connected to the present. The disappearance of Justin has made Kelly very unhappy. B
3、We also use the present perfect tense to talk about something that started in the past, and is still happening now. I have not seen Justin since last Friday night. C We use the present perfect tense when the exact time of an action is not clear or important. We use it with time expressions such as:a
4、lready ever for just lately never recently since yet We use already for affirmative statements and yet for negative statements. We use for + a period of time and since + a point in time. D We use the present perfect tense to talk about actions that were completed only a short time ago. In this case,
5、 just is used. Pay attention to the position of just. He has just gone out.(=He went out a few minutes ago.) We use the present perfect tense here to tell others that he isnt here now. I have just heard the news.(Now I know the news.) E We can also use the present perfect tense for repeated actions,
6、 that is, we use the present perfect tense with the time expressions once/twice/three times F Actions occurring in an incomplete period might be indicated by today or this morning /afternoon/evening/week/month/year/century or all day/night/week, all the time, always etc. Tom has rung up three times
7、this morning.(Now it is still in the morning.) Tom rang up three times this morning.(Now it is not still in the morning.)Complete the following sentences with the proper tense.A We have studied (study) English for about five years.B They have lived (live) in the south since their daughter was born.C
8、 I have read (read) your article three times. Its well written.D The student has finished (finish) her homework already.E Eric has gone (go) back to his hometown today.F The police have just finished (finish)searching the area. 4 Compare the simple past tense and the present perfect tenseLook at the
9、 following sentences and point out what tense or tenses are used in them and the reasons why they are used. A We have studied English for about five years. We began to study it five years ago .B They moved to the south in 1990 and have lived there since then. C Eric left home last year and has just
10、come back.2E Justin has been away from home for several days. He disappeared last Friday.F They bought this house three years ago and they have lived here since then.G my brother went to see my grandpa last week. He has visited him three times this month.Complete the following sentences :a Have you
11、seen my pen? Yes, I saw it on your desk just now.b Have you had dinner? Yes, I had it with Mary.C Has the postman come yet/this morning?D Did the postman come this morning?E I have known him for a long time.F Hello! I didnt know you were here in Nanjing. How long have you been here?Notes: 1)The pres
12、ent perfect tense is normally used for an action which lasts throughout an incomplete period, but with the past simple tense, we use time expressions which a fixed point in the past. c.f.We havent seen Justin for a week.(He is still missing.)Justin disappeared last week.(It may mean that this week J
13、ustin is here.)He has smoked since he left school.(He still smokes.)He smoked for six months.(It means that he stopped smoking then. 2) Sometimes, however, the action finishes at the time of speaking. It has been very cold lately but its just beginning to get warmer.3)On meeting someone, you may say
14、: I havent seen you for ages.(But I see you now.)4) For a past action whose time is not definite and often has a result in the present. Tom has had a bad car crash.(Hes probably still in hospital now.) Tom had a bad car crash.(But hes probably out of hospital now.) The lift has broken down.(We have
15、to use the stairs.) The lift broke down.( But its probably working again now.)5 Read the diary entry and then complete it using the correct forms of the verbs in brackets.Answers:(2) saw (3) has visited (4) loves (5) hasnt visited (6) has swum (7) has never met (8) has dived (9) has found (10) hasnt
16、 found (11) Has, been 6 Assignment Period Two Present perfect continuous tense Teaching aim: To give a brief introduction to the present perfect continuous tense Teaching procedures: 1 Go over the news story on Page 2 and find the sentences using the present perfect continuous tense.3Please explain why the tense is used in these sentences. 2 The form of the present perfect continuous tense 3 Talk about the uses of the present
