高中英语 模块二 unit1 Grammar and usage 2课件 译林牛津必修2

1、2021/8/11 星期三1Grammar and usageUnit1Present perfect or present continuous?2021/8/11 星期三2Present perfect or present perfect continuous?2021/8/11 星期三3We 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 start

2、ed in the past and is still happening. 2021/8/11 星期三4Li Jia _ (read) a book about Stonehenge. (She finished reading the book.)Li Jia _ (read) a book about Stonehenge. (She is still reading the book.) has read has been reading2021/8/11 星期三5 2.We can use the present perfect tense for repeated actions,

3、 and the present perfect continuous tense for non-stop actions.I _ (visit) Egypt twice this month. (repeated actions)I _ (tour) Egypt for two months. (non-stop action) have visited have been touring2021/8/11 星期三63.We usually use the present perfect tense to ask questions beginning with how many or h

4、ow much, and the present perfect continuous tense to ask questions beginning with how long .How many times _ you _ (swim) in the lake?How long _ you _ (swim) in the lake? have swumhave been swimming2021/8/11 星期三74.We can use either a state verb or an action verb with the present perfect tense but we

5、 usually can only use an action verb with the present perfect continuous tense.2021/8/11 星期三8I have had this camera for five years.state verbI have taken photos of UFOs with this camera.I have been taking photos of UFOs with this camera.action verbaction verb2021/8/11 星期三95.We use the present perfec

6、t tense, not the present perfect continuous tense, with the words like never, yet, already and ever. ( ) I have never visited America.( ) I have already been to America.( ) I have never been visiting AmericaTTF2021/8/11 星期三10Exercise A: Read the conversation and circle the right words to complete it

7、.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 making2021/8/11 星期三11Where do you think the boy has been waiting?What have the aliens been travelling in? What does it look like?Who else have the alie

8、ns talked to?What other planets have the aliens visited?Exercise B: Try to answer the following questions according to the comic strip2021/8/11 星期三12Sample answers of Part B1 He has been waiting at an under-ground station.2 They have been traveling in an UFO. It looks like a saucer.3 They probably have talked to animals or plants on the earth as well as creatures on other plants.4 They have visited Mars, Venus, Jupiter and