八年级英语上册-Unit-5-Educational-exchanges-Grammar课件.ppt（纯ppt,不包含音视频素材）

1、 A The present perfect tense We use the present perfect tense to talk about things that happened in the past but have a connection to the present in some wayI/You/We/Theyhave madehave not made a lot of new friendsHave I/you/we/theymadeYes,No,I/you/we/theyhave have not a lot of new friendsHe/She/Itha

2、ve madehave not made a lot of new friendsHasHe/She/ItmadeYes,No,He/She/Ithave have not a lot of new friends Work out the rule We form the present perfect tense with _or _+past participle of the main verb.havehasThings to remember I/You/We/They have=Ive/Youve/Weve/Theyve He/She/It has=Hes/Shes/Its ha

3、ve not=havent has not=hasnt The past participle of a regular verb is usually the same as its past tense.You can find the past participles of some irregular verbs on pages 141 and 142.规则动词的过去分词和过去式一样规则动词的过去分词和过去式一样 不规则的动词过去分词见不规则的动词过去分词见P141和和P142.arrive-arrived arrived go went-gone Eric has been in

4、Beijing for a week.Complete his email to his mother with the present perfect tense of the verbs in brackets.To:Mum From:Eric Dear Mum,Ive been in Beijing for a week.I(1)_(meet)my host family.havemet Theyre really friendly.My host brother Wei and I(2)_(play)a lot of football at a park near his home.W

5、e both enjoy football very much.Mrs.Li,my host mother,(3)_(cook)me delicious Chinese food.have played has cooked I(4)_(study)Chinese with my British classmates.We(5)_(see)some places of interest in Beijing too.However,I(6)_(not,visit)the Great Wall yet,and I(7)_(not,do)any shopping either.I will do

6、these things next week.Love,Erichave studiedhave seenhavent visitedhavent done B The present perfect tense with already,yet,ever and never We can use already,yet,ever and never with the present perfect tense.Sarah has already seen many places of interest in Beijing.Have you seen the Great Wall yet?N

7、o,I have not seen the Great Wall yet.Have you ever visited the Summer Palace?No,I have never visited the Summer Palace.Work out the rule We can use the adverbs already,ever and never(before/after)have/has and(before/after)the main verb.We often use yet at the(beginning/end)of a question or a negativ

8、e sentence.我们可以把我们可以把already,ever and never 放在放在have,has 或者实义动词或者实义动词前或者后面。前或者后面。把把 yet放在疑问句或者否定句中，置放在疑问句或者否定句中，置于句子的结尾。于句子的结尾。Sarah wants to know whether the students from Beijing have visited any places in London before.Ask and answer questions in pairs.Follow the example.B1 S1:Has Alice ever seen

9、 big Ben?S2:No,she hasnt.Shes never seen Big Ben.S1:Has she ever visited Tower Bridge?S2:Yes,she has.She visited it two years ago.See Big BenVisit Tower BridgeTour around Bucking-ham PalaceAlice two years agoGeorge(one and a half years ago)Robin(one year ago Later Sarah is asking the students from B

10、eijing about what they have and have not done in London.Ask and answer questions in pairs.Follow the example.B2Do shoppingSee Big BenAliceGeorgeRobin S1:Have you done any shopping yet.Alice?S2:No,I havent done any shopping yet.S1:Have you seen Big Ben yet?S2:Yes,Ive already seen it.More practise 1.I

11、_already_(see)the film.2._he _(finish)his work today?Not yet 3._ you _(be)to Hong Kong?Yes,I _(be)there twice.haveseenHasfinishedHave beenhave been4._you ever _(eat)chocolate sundaes（圣代）（圣代）?No,never.5.My father_ just _(come)back from work.He is tired now.6.Wheres Li Ming?He _(go)to the teachers off

12、ice.Haveeatenhascamehas gone 7.So far I _(make)quite a few friends here.8.How long_the Wangs _(stay)here?For two weeks.9.I have been to Macau before.(改为否定句改为否定句)I _ _ been to Macau before.have made havestayedhavenot10.He hasnt come to school because hes ill.(就划线部分提问就划线部分提问)_ _ he come to school?11.He has learned English for 5 years.(就划线部分提问就划线部分提问)_ _ _ _ learned English?12.I bought a new bike just now.(用用just改写改写)I_just_a new bike.Why hasHow longhashehavebought Thank you!