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单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,*,Tales of the unexplained,Grammar and usage,Unit,1,Present perfect tense &,Present perfect continuous tense,Present perfect tense,Step 1 Lead-in,Go over the news story on Page 2 and find the sentences using the present perfect tense.,Please explain why the tense is used in these sentences.,The disappearance of Justin_ (make) Kelly very unhappy.,has,made,1. We use the present perfect tense to talk about things that happened in the recent past, but are connected to the present.,Step 2 Points 1-6,I _ (not see) Justin since last Friday night.,have not seen,2. We also use the present perfect tense to talk about something that started in the past, and is still happening now,.,3.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:,already ever for just lately never,recently since yet,Exercise: complete the following sentences with the,proper tense:,(1) We _(study) English,for about five,years.,(2) They _(live ) in the south,since their,daughter was born.,(3) I _(read) your article,three times,. Its,well written.,(4) The student _ (finish) her,homework,already,.,(5) Eric _,just,_ (go) back to his hometown.,have studied,have lived,have read,have finished,has gone,We use,already,for affirmative statements and,yet,for negative statements.,We use,for,+ a period of time and,since,+ a point in time.,4. We use the present perfect tense to talk about actions that were completed only a short time ago.,The police,have,just,finished,searching the areas.,5. We can also use the present perfect tense for,repeated actions, that is, we use the present perfect tense with the time expressions,once / twice / three times,6. Form:,have / has,+,the past participle of the verb,Step 3,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 found (11) Has, been,Present perfect continuous tense,1. Form: have / has been + the present participle of the verb.,2.,We use the present perfect continuous tense to talk about,actions that started in the past and are still continuing,.,I,have not been sleeping,well since I returned home.,Past,_,Present,not being able to sleep well,I returned home.,Im still not sleeping well.,3. We also use the present perfect continuous tense to talk about,actions that have just finished but are still connected to the present in some way,.,Kelly: Sorry Im late.,Have,you,been waiting,long?,Mavis: Yes.,Ive been waiting,for an hour.,past,_,One hour ago Present,Mavis started waiting for Kelly.,Kelly arrives.,have been observing,have been talking,have been taking,have been watching,have seen,have been writing,Prepare Grammar and usage .,2. Finish,Part C1 and C2 in Workbook,.,Homework,
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