高中英语 模块二 unit1 Grammar and usage 1课件 译林牛津必修2.ppt

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1、GrammarandusageUnit 1Presentperfecttense&Presentperfectcontinuoustense2021/8/11 星期三1Present perfect tenseStep1Lead-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.2021/8/11 星期三2The disappearance of Just

2、in_ (make)Kelly very unhappy.has made1.We use the present perfect tense to talk about things that happened in the recent past,but are connected to the present.Step 2 Points 1-62021/8/11 星期三3I _(not see)Justin since last Friday night.have not seen2.We also use the present perfect tense to talk about

3、something that started in the past,and is still happening now.2021/8/11 星期三43.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 2021/8/11 星期三5Exercise:completethefo

4、llowingsentenceswiththepropertense:(1)We _(study)English for about five years.(2)They _(live)in the south since their daughter was born.(3)I _(read)your article three times.Its well written.(4)The student _(finish)her homework already.(5)Eric _ just _(go)back to his hometown.have studiedhave livedha

5、ve readhave finishedhas gone2021/8/11 星期三6We use already for affirmativestatements and yet for negativestatements.Weusefor+aperiodoftimeandsince+apointintime.2021/8/11 星期三74.We use the present perfect tense to talk about actions that were completed only a short time ago.The police have just finished

6、 searching the areas.2021/8/11 星期三85.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 times6.Form:have/has+the past participle of the verb2021/8/11 星期三9Step 3 Read the diary entry and then complete it u

7、sing the correct forms of the verbs in brackets.Answers:(2)saw (3)has visited (4)loves (5)hasnt visited (6)has swum (7)has never met (8)has dived (9)has found (10)hasnt found (11)Has,been 2021/8/11 星期三10Present perfect continuous tense1.Form:have/hasbeen+thepresentparticipleoftheverb.2021/8/11 星期三11

8、2.Weusethepresentperfectcontinuoustensetotalkaboutactionsthatstartedinthepastandarestillcontinuing.I have not been sleeping well since I returned home.Past _ Presentnot being able to sleep wellI returned home.Im still not sleeping well.2021/8/11 星期三123.We also use the present perfect continuous tens

9、e to talk about actions that have just finished but are still connected to the present in some way.Kelly:Sorry Im late.Have you been waiting long?Mavis:Yes.Ive been waiting for an hour.past_ One hour ago PresentMavis started waiting for Kelly.Kelly arrives.2021/8/11 星期三13 have been observing have been talking have been taking have been watching have seen have been writing2021/8/11 星期三141.PrepareGrammarandusageonpage10-11.2.FinishPartC1andC2onpage88inWorkbook.Homework2021/8/11 星期三152021/8/11 星期三16