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2019-2020年高中英语 Unit1Tales of the unexplainedGrammar and usage教案1 牛津译林版必修2Aims: . Learn the basic forms of present perfect tense and present perfect continuous tense. . Learn to use them in different situations. . Learn state verbs and action verbs in different situations. Preparing . Words and expressions:latelytreasure . Analyze the following sentences and review present perfect tenseI have never seen pandas .We have not seen him for a long time . We have not seen him since xx.( already ever for just lately never recently since yet so far ) . Translation:你去过北京吗？你工作已完成了吗？她回来已一周了。在过去的十年里，这里发生了巨大的变化。这是我第一次来这里。这是我所看过的最好的电影。 Possible answers:Have you ever been to Beijing?Have you finished your work yet?She has been back for a week. / It is /has been a week since she came back.Great changes have taken place here in the past / last 10 years.This is the first time (that) I have been here.This is the best film that I have ever seen. Learning Period . Basic formspresent perfect tense : have / has donepresent perfect continuous tense : have / has been doing . Present perfect tenseUsageTo talk about things that happened in the recent past, but are connected to the present.The disappearance of Justin has made Kelly very unhappy.To talk about something that started in the past, and is still happening now.We have not seen him since last Friday night.When the exact time of an action is not clear or important.The boy has already e home.I havent seen since xx.(for + a period of time) / (since + a point in time) To talk about actions that we pleted only a short time ago.The police have just finished searching the area.For repeated actions.Some villagers say that they have seen UFOs many times. . Present perfect continuous tenseUsage To talk about actions that started in the past, and are still continuing. I havent been sleeping well since I returned home.2. To talk about actions that have just finished but are still connected to the present in some ways. -Have you been waiting long?-Yes. I have been waiting for an hour. . Exercises on p.9 . Homework: Workbook p.88 C1 Period . Revision: present perfect tense and present perfect continuous tense . Different usages of them1. We use the present perfect tense to talk about an action pleted in the recent past, and present perfect continuous tense for an action that started in the past and is still happening.Li jia has read a book about Stonehenge.(She finished reading the book.)Li jia has been reading a book about Stonehenge.(She is still reading the book.)We use the present perfect tense for repeated actions, and present perfect continuous tense for non-stop actions.I have visited Egypt twice this month.I have been touring Egypt for two this month.We use the present perfect tense to ask questions beginning with how many /much, and present perfect continuous tense to ask questions beginning with how longHow many times have you swum in the lake?How long have you been swimming in the lake? 4. 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 tense for non-stop actions. I have had this camera for 5 years. (state verb)I have taken photos of UFOs with this camera. (action verb)I have been taking photos of UFOs with this camera. (action verb)5. We use the present perfect tense, not present perfect continuous tense, with words like never,yet.already and ever. . Exercises on p. 11 . Homework: Workbook p.88 C2ExercisesHomework exercise p.15-18
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