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江苏省常州市西夏墅中学高一英语教案:UNIT1《TALES OF THE UNEXPLAINED GRAMMAR AND USAGE2》(牛津译林版必修2)WORD版无答案.doc

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1、单元:Unit 1 Tales of the unexplained板块:Grammar and usage 2Thoughts on the design:Learn the differences between the present perfect tense and the present perfect continuous tense.Teaching objectives:1. Learn how to form and use the present perfect tense.2. Understand when the present perfect continuous

2、 tense is used in sentences.Teaching procedures:Step 1 Compare the two tenses1. We use the present perfect tense to talk about an action completed in the recent past, and the present perfect continuous tense for an action that started in the past and is still happening. 现在完成时和现在完成进行时都表示动作从过去开始,但现在完成

3、时可表示事件或动作刚结束,而现在完成进行时则强调动作仍在继续。1) Li Jia has read a book about Stonehenge. (表示她已经读完了。)2) Li Jia has been reading a book about Stonehenge. (表示她仍在读。)2. We can use the present perfect tense for repeated actions, and the present perfect continuous tense for non-stop actions.We usually use the present pe

4、rfect tense to ask questions beginning with how many/much, and the present perfect continuous tense to ask questions beginning with how long.现在完成时可表示反复发生的动作,提问时用how many / how much。而现在完成进行时则表示持续的、不间断的动作,提问时用how long。1) How many times have you visited Egypt this month? 你这个月去了埃及几次?I have visited Egypt

5、 twice this month. 我这个月去了埃及两次。2) How long have you been touring Egypt? 你在埃及旅游多久了?I have been touring Egypt for two months. 我已经在埃及旅游两个月了。3. We can use either a state verb or an action verb with the present perfect tense but we usually can only use an action verb with the present perfect continuous te

6、nse.现在完成时可以用表示状态的动词或表示动作的动词做谓语。而现在完成进行时则只能用表示动作的动词做谓语。1) I have had this camera for five years. (had是表示“拥有”状态的动词)2) I have taken photos of UFOs with this camera. (taken是表示动作的动词)3) I have been taking photos of UFOs with this camera. (taking是表示动作的动词)4. We use the present perfect tense, not the present

7、 perfect continuous tense, with the words like never, yet, already and ever. 现在完成时的句子中可以用像never、yet、already和ever这样的词,而现在完成进行时的句子中则不可以用这样的词。Exercise:(T) I have never visited America.(T) I have already been to America.(F) I have never been visiting AmericaStep 2 Practice 1. Part A: Read the conversati

8、on and circle the right words to complete it.Answers: (1) heard (2) been doing (3) been researching (4) been doing (5) started (6) done (7) read (8) found (9) started (10) been doing (11) been making2. Try to answer the following questions according to the comic strip.(1) Where do you think the boy

9、has been waiting? (He has been waiting at an under-ground station.)(2) What have the aliens been traveling in? What does it look like? (They have been traveling in an UFO. It looks like a saucer.)(3) Who else have the aliens talked to?(They probably have talked to animals or plants on the earth as well as creatures on other plants.)(4) What other planets have the aliens visited?(They have visited Mars, Venus, Jupiter and some other planets.)Step 3 Homework: 1. Go through what we learnt today and get familiar with them.2. Prepare Task.

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