八年級(jí)下冊(cè)Unit 1 Past and PresentGrammar優(yōu)秀ppt課件

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A daily reprt
S, she has learned English fr tw years.
Her name is Wu. She’s 4.
She started t learn English when she was 2.
1.過(guò)去發(fā)生的動(dòng)作持續(xù)到了現(xiàn)在，可能繼續(xù)發(fā)展下去。
2.過(guò)去發(fā)生的動(dòng)作對(duì)現(xiàn)在造成了影響或結(jié)果。
Wu：Let’s g t watch this film.Ma: Srry, I watched the film in the class. I have watched it already.
3. We use the present perfect tense t talk abut hw many times an actn has happened till nw. 表示到目前為止一個(gè)動(dòng)作發(fā)生（重復(fù)）的次數(shù)。
Bill visited Australia in 2002 and 2020.Bill has been t Australia twice.
Bill visited Australia in 2002 and 2022. Bill has been t Australia twice. It is the first time that I have been here. I have already read this bk many times.
1.She's cme first three times.
2.There have been many buildings in my twn.
3.I can’t get in the huse. I’ve lst my keys.
4.She has lived in Liverpl all her life.
5.Hw clean! Wh has cleaned the rm?
6.We have seen the film twice.
Grup the fllwing sentences accrding t the usages.
Usage 1
Structure f the present perfect tense
have/has
◆ Present perfect tense—Negative frms
haven’t/have nt hasn’t/has nt
◆ Present perfect tense—Yes/N questins
+ dne ... ?
Yes, sb has/have.N, sb has/haven’t.
現(xiàn)在完成時(shí)表示過(guò)去發(fā)生或已經(jīng)完成的某一動(dòng)作對(duì)現(xiàn)在造成的影響或結(jié)果。(漢語(yǔ)中常用“已經(jīng)”、“過(guò)”、“了”等表達(dá)) 通常與表示包括現(xiàn)在在內(nèi)的時(shí)間副詞just(句中）, already(句中，句末）, befre(句末）, yet（句末）, never（句中）, ever（句中）,recently(句末)等狀語(yǔ)連用。例如：
1.Eddie has just eaten my fd. (Eddie已經(jīng)吃了我的食物。）2.I have never heard f that befre.（我以前從未聽(tīng)說(shuō)過(guò)那件事） 3. Have yu ever ridden a hrse?（你曾經(jīng)騎過(guò)馬嗎？） 4.She has already finished the wrk.（她早已經(jīng)完成這個(gè)工作了。）5.We haven’t finished ur hmewrk yet. (我們還沒(méi)有完成作業(yè)呢。)
Nthing great was ever achieved withut enthusiasm
過(guò)去分詞的規(guī)則變化(同過(guò)去式的規(guī)則變化)
課本P122 不規(guī)則動(dòng)詞的變形把原形、過(guò)去式、過(guò)去分詞一起記憶
1. brrw _______ 2. hpe ______3. make ______ 4. get _______5. plan ________ 6. cry ____7. send _____ 8. watch _______9. say ______ 10. grw ______11. hit _____ 12. enjy _______
Mr. Wu wants the students t practise using the present perfect tense. Help them write the past participles f the verbs belw. (P 14)
1. They _____________ (finish) their hmewrk already.2. Jhn ____ never ______ (visit) China.3. Mr. Li ____________ (repair) ver ten bicycles since Mnday. 4. We ____________ (nt see) each ther fr years.
have finished
has visited
has repaired
haven’t seen
5. My parents _____________ (nt cme) back yet.6. Our teacher __________ (teach) us a lt abut the histry f China.
haven’t cme
B. Cmplete the sentences belw using the present perfect tense.
C. Cmplete the cnversatin. Use the crrect frm f the verbs in brackets.
Millie: ______ yu _____ (see) any films recently, Sandy?Sandy: N, I haven’t. What abut yu?Millie: I _____ (see) ne last Saturday. Sandy: What’s it abut?Millie: It’s abut the changes in Beijing ver the past century. Frm this film, I ____________ (learn) mre abut Beijing’s past and present.Sandy: Oh, I think I __________ (hear) abut the film. D yu plan t see it again?Millie: Yes, I’d like t.
Have seen
have learnt
一、用括號(hào)中所給動(dòng)詞的適當(dāng)形式填空1. He ___________ (wait) fr an hur.2. I _______________ (nt finish) the wrk yet.3. _____ yu _______ (knw) him since then?4. I ____________ (nt hear) frm my brther fr a lng time.5. We ___________ (be) there many times since 3 years ag.
haven't finished
Have knwn
haven't heard
1.我們已完成作業(yè)了。
2.陳女士還沒(méi)有回家。
3.我剛聽(tīng)說(shuō)了這個(gè)消息。
4.他三歲的時(shí)候就學(xué)英語(yǔ)了。
5.這部電影她看了三遍了。
6.你給你朋友買過(guò)生日禮物 嗎？
1. We have already finished ur hmewrk.2. Miss Chen hasn't gt hme yet.3. I have just heard abut the news.4. He has learned English since he was 3 years ld.5. She has watched the mvie three times.6. Have yu ever bught a birthday present fr yuf friend?