英语八年级上册（2024）Unit 1 This is meUnderstanding ideas教学课件ppt

这是一份英语八年级上册（2024）Unit 1 This is meUnderstanding ideas教学课件ppt，共24页。PPT课件主要包含了动词的过去分词，现在完成时的用法，现在完成时的标志词，再看下面的对话，called，moved，cried，stopped，spoken，taught等内容，欢迎下载使用。
1. Understand the meaning and usage f the present perfect tense and summarize its grammar rules.2. Write sentences with the present perfect tense.。3. Rewrite sentences using the present perfect tense.
Learning Objectives
By the end f the lessn, yu will be able t...
Enjy the vide: Have yu ever been t Paris?
Read the sentences frm the reading passage and summarise the grammar rules.
(a) I haven’t tld Maddie the whle stry yet.(b) I have already learnt that I am what I am.
Nw find ne mre sentences with these structures in the reading passage.
I haven’t tld Maddie yet hw she has changed me.
规则形式：动词过去分词的规则构成与其过去式的构成相同。
wrk → wrked, pllute → plluted，plan → planned，carry → carried等。
不规则形式：不规则动词的过去分词需牢记。
be - was / were – been d - did – dne eat - ate – eaten g - went - gnesee - saw – seen find - fund – fund have-had–had make - made - madeput - put – put let - let – letbecme-became-becme grw-grew-grwnhit-hit-hit hld-held-heldleave-left-left rise-rse-risensend-sent-sent begin-began-begunbreak-brke-brken bring-brught-brught
build – built – built buy - bught – bught catch - caught – caught cme - came - cmecst - cst – cst cut - cut – cut drink-drank–drunk fall - fell - fallenfeel - felt – felt frget-frgt – frgttenget -gt- gtten give-gave-givenkeep-kept-kept knw-knew-knwnlse-lst-lst read-read-readrun-ran-run say-said -said
现在完成时还可表示到目前为止已经完成的事情。
现在完成时可表示过去发生或已经完成的动作对现在造成的影响或结果。
e.g. The children have read the bk.(强调孩子们已经了解了这本书的大概内容。)His elder brther has becme a dctr.(强调他的哥哥现在是一名医生。)
e.g. My aunt has travelled all ver the wrld.
e.g. The children have nt / haven’t read the bk.His elder brther has nt / hasn’t becme a dctr.
现在完成时的其它句式结构
否定句：主语+ have / has + nt +动词的过去分词（+其它）.(其中have nt = haven’t; has nt = hasn’t)
一般疑问句及其简略回答：Have / Has +主语+动词的过去分词（+其它）?肯定回答：Yes, 主语(人称代词主格) + have / has.否定回答：N, 主语(人称代词主格) + haven’t / hasn’t.
e.g. —Have the children read the bk?—Yes, they have. / N, they haven’t.—Has his elder brther becme a dctr?—Yes, he has. / N, he hasn’t.
现在完成时常与 just, already 或 yet 等表示时间的状语连用。
e.g. I have just heard the news. Astrnauts have already been t the mn. We have just started t explre ther planets.
可以看出，just 用来表示 “刚刚”，already 用来表示 “已经”，两者都用于肯定句中，一般是置于 have /has 之后。在否定句中则可以用 yet，表示 “还未”，有 “以后可能会” 的含义。
e.g. The scientists have nt heard frm it yet. Man has nt discvered any life in space yet.
现在完成时在表达经历时表示该事件是在现在之前的某一个时间里发生的，重点在于已完成动作对现在的影响。而一般过去时则表示在过去某一具体时间发生的事情。
e.g. I have just been t Lndn. I went there last mnth. I have already finished my hmewrk. I finished it an hur ag.
现在完成时与一般过去时
在没有明确的过去时间状语时，如何判断该用现在完成时还是一般过去时呢？判断的标准是看该行为是否对现在有影响，也就是说该句所强调的是什么。试看以下对话：
A: Where have yu put my bk? I can’t find it. B: I put it n yur desk yesterday.
该对话中，当A问对方把自己的书放在何处时，A强调的是现在找不到了，因此用现在完成时。但是B回答时只是说明当时放的位置，所以用一般过去时。
A: Wuld yu like t g and see the film with me tnight? B: Srry, I have seen it already.
对话中的现在完成时表示对结果的强调：电影看过了，所以不想再看了。
Write sentences with the present perfect tense.
1. I / just / cut my lng hair __________________________________________________2. She / never / wrry abut / her lks__________________________________________________3. I / just/ paint a beautiful flwer / n my face __________________________________________________4. Chris / always / wear / glasses __________________________________________________5. Jessica / already / change her pinin / n her lks __________________________________________________
Jessica has already changed her pinin n her lks.
I have just cut my lng hair.
She has never wrried abut her lks.
I have just painted a beautiful flwer n my face.
Chris has always wrn glasses.
I ________________ (always, be) the tallest student in my class. And I ________________ (always, sit) in the last rw at schl. Peple always lk at me in surprise. “Yu must be gd at basketball,” my classmates ________________(always, say). In fact, I'm nt gd at basketball at all. But being tall is nt always bad. It makes me easy t recgnise, and I can help ther peple get things dwn. Over time, I ________________(learn) t accept my height, I'm prud f myself.
Rewrite the passage using the present perfect tense.
have always been
have always sat
have always said
have learnt
Ⅰ. 写出下列动词的过去分词。1. call _______    2. mve _______        3. cry _______4. stp _______   5. speak _______       6. teach _______7. build _______ 8. decide _______     9. shw _______10. put _______
Ⅱ. 根据语境及括号内所给词语提示填空。1. —Wuld yu like sme mre fd?—N, thanks. I ______________(have) enugh.2. —_____________ yu _____________(see) my bag?I can’t find it anywhere.—N, I haven’t.3. —Mm, can I g t play basketball with my friends?—N, yu can’t. Yu ______________(nt wash) yur dirty clthes.
Have seen
haven’t washed
4. —Let’s visit the science museum this afternn, Sam.—I ______________(visit) it twice. I’d like t visit the city z.5. Yu dn’t need t clean the huse. Emily ______________ (clean) it.
have visited
has cleaned
Ⅲ. 根据所给汉语意思完成英语句子，每空一词（含缩略形式）。1. 我们已经找到了那个丢失的男孩。 We ________ ________ that lst by.2. 这些天，他没有见到Jack。 He ________ ________ Jack these days.3. Rbert已准备好了一切。 Rbert ________ ___________ everything ready.
have fund
hasn’t seen
has gt / gtten
4. 你把数学书32页的练习题写完了吗？________ yu ________ writing the exercises n page 32 f yur math bk?5. 这种疾病已经传播开了，我们要小心。The disease ________ ________. We need t be careful.
Have finished
has spread
Ⅳ. 根据括号内的要求完成下列各题，每空一词（含缩略形式）。1. Jack and Henry have watched the cncert. (改为否定句)Jack and Henry ________ ________ the cncert.2. Mr. Brwn has sld the ld painting.  (改为一般疑问句)________ Mr. Brwn ________ the ld painting?3. —Has the film begun?   (补全肯定答语)—Yes, ________ ________.4. —Have yur cusins cme back frm Qingda? (补全否定答语)—N, ________ ________.
haven’t watched
Has sld
it has
they haven’t