Unit 3 Grammar课件 2022-2023学年牛津译林版八年级英语下册.pptxVIP

Unit3 Online toursGrammarBy Wang Qing Learning aims 1.tell the differences between the simple past tense and the present perfect tense.2.use the simple past tense and the present perfect tense correctly. Free talk Have you ever been to Hi U city?When did you last go to Hi U city? Have you ever been to Hi U city?When did you last go to Hi U city?Read and compare:the present perfect tense(现在完成时)the simple past tense(一般过去时) Read and tell the difference:Daniel went to Beijing two years ago.Daniel has lived in Beijing for two years.Can we find out where Daniel is now?No.We can just know where Daniel was two years ago.Yes. Daniel started to live in Beijing two years ago,and now he still lives there.the present perfect tense(现在完成时)the simple past tense(一般过去时) Read and tell the difference:Daniel went to Beijing two years ago.Daniel has lived in Beijing for two years.Work out the rule:We use________________ to tell what happened in the past.We use________________ to talk about an action that started in the past and continues(继续) to the present.the simple past tense the present perfect tensethe simple past tense(一般过去时)the present perfect tense(现在完成时) Read and tell the difference:Daniel bought a new computer last month.Daniel has bought a new computer.Does Daniel still have the computer now?We are not sure.We can just know he bought it last month.Yes. Daniel has a computer now.But we don’t know when he bought it. Read and tell the difference:Daniel bought a new computer last month.Daniel has bought a new computer.Work out the rule:We use the simple past tense to tell what happened _______________.We use the present perfect tense to talk about the __________ of an action.When the action happened is not important.in the pastresult Read and tell the difference:Mr.Wu visited Canada in 2010 and 2011.Mr.Wu has been to Canada twice.How many times has Mr.Wu visited Canada till now?We don’t know.We are not sure if he visited it after 2011.Twice.But we don’t know when he visit