Book2_U1_Grammarandusage1.doc

牛津高中英语教学设计单元：Unit 1 Tales of the unexplained板块：Grammar Teaching aims:Learn the grammar Present perfect tense and Present perfect continuous tense.Teaching important points:1. Learn how to form and use the present perfect tense.2. Understand when the present perfect continuous tense is used in sentences.Teaching methods:Explaining and practicing.Teaching aids:The multi-media.Teaching procedures:Step 1 Lead- inGo 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.Step 2 Present perfect tense1. The form of the present perfect tense: has/ have done.2. 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. 表示过去发生的事对现在仍有影响。The disappearance of Justin has made Kelly very unhappy. (Justin在过去失踪，但Kelly至今仍旧为他的失踪感到不高兴。) B. We also use the present perfect tense to talk about something that started in the past, and is still happening now. 表示过去开始的动作一直延续到现在。I have not seen Justin since last Friday night. (从上周五晚上到现在一直都没有见到过。)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: already ever for just lately never recently since yet Exercise: Complete the following sentences with the proper tense.(1) We have studied (study) English for about five years.(2) They have lived (live) in the south since their daughter was born.(3) I have read (read) your article three times. Its well written.(4) The student has finished (finish) her homework already.(5) Eric has just gone (go) back to his hometown.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, just is used. Pay attention to the position of just. The police have just finished searching the area.E. 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 times3. Read the diary entry and then complete it using the correct forms of the verbs in brackets.Answers: (1) saw (2) has visited (3) loves (4) hasnt visited (5) has swum (6) has never met (7) has dived (8) has found (9) hasnt found (10) Has, been Step 3 Present perfect continuous tense1. The form of the present perfect continuous tense: have / has been doing2. Talk about the uses of the present perfect continuous tenseA. We sometimes use the Present perfect continuous tense to talk about actions that started in the past and are still continuing. 表示过去开始的动作一直延续到现在并仍在继续之中。 I have not been sleeping well since I returned home. “我”回家后一直都没有睡好，现在也没有睡好。B. 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. 表示过去开始的动作刚结束并在某种情况下与现在有关联。 Kelly：Sorry Im lateHave you been waiting long? Sally：YesI have been waiting for an hour.凯利刚到，对方虽然不再等了，但已一直等到现在。3. Fill in the missing words on page 9 Answers: (1) have been talking (2) have been taking (3) ha