外研版（2024）八年级上册（2024）Understanding ideas背景图ppt课件

这是一份外研版（2024）八年级上册（2024）Understanding ideas背景图ppt课件，共50页。PPT课件主要包含了目 录，定义-1 ，定义-2 ，定义-3 ，现在完成时的构成 ，现在完成时的标志 等内容，欢迎下载使用。
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04 Exercise
03 Prductin
02 Presentatin
01 Lead-in
(a) I haven't tld Maddie yet...(b) I have already learnt that I am what I am.Nw find ne mre sentence with these structures in the reading passage.
Read the sentences frm the reading passage and summarise the grammar rules.
现在完成时have/had /has+dne
02 Presentatin
Presentatin
定义1：从过去开始并延续到现在，可能还将延续下去要点：过去开始+延续到现在
eg: a) Lily has studied in N.1 Middle Schl since tw years ag. b) They have lived in Changzhu fr ten years.
该定义强调在“现在”这个时间点，动作是存在的。动词在nw这个点是存在的，可能到此结束，也可能继续下去注意：若在nw这个点动作不存在，则是一般过去时。
定义2：动作发生在过去并已结束，但对现在有影响或与某种联系。要点：过去发生+对现在有影响/联系
eg：a) Wh has cleaned the rm. It’s clean and tidy. b) I wn’t see the film with yu. I have seen it.
该定义强调过去动作对现在的影响或联系；若不存在影响或练习，则是一般过去时。
定义3：在过去一段时间内，动作发生了多次。（包括零次never）要点：次数
eg：a) We have been t the UK three times.b) Hw many times has Peter visited the Shanghai Museum ver the past years?
现在完成时谓语由“助动词have/has+动词的过去分词”构成。
结构：主语+have/has + 动词的过去分词(+其他).
▶I/Yu have wrked.我/你工作了。▶He/She/lt has wrked.他/她工作了。/它奏效了。▶We/Yu/They have wrked.我们/你们/他们工作了。
结构：主语+have/has+nt+动词的过去分词(+其他).
▶ I /Yu have nt wrked. 我/你还没有工作。▶ He/She/It has nt wrked. 他/她还没有工作。▶ We/Yu/They have ntwrked. 我们/你们/他们还没有工作。
结构：Have/Has +主语+动词的过去分词(+其他)?
▶ Have //yu wrked? 我/你工作了吗?▶Has he/she/it wrked? 他/她工作了吗?/它奏效了吗?▶Have we/yu/they wrked? 我们/你们/他们工作了吗?
结构：肯定回答:Yes，主语 +have/has. 否定回答:N，主语+haven't/hasn't.
▶Have we/yu/they wrked? 我们/你们/他们工作了吗? 肯定:Yes,yu/ have. 是的,你/我工作了。 否定: N, yu/ haven't. 不，你/我没有。没有。
动词的过去分词的构成原则
1.规则动词的变化规则
（1）大部分动词在词尾直接加 -ed clean→cleaned 打扫 help → helped 帮助 play→ played 玩耍（2）动词以不发音的字母e结尾时，直接加 -d like → liked 喜欢 live →lived 居住 lve → lved 喜爱（3）动词以“辅音字母+y”结尾时,变y为i再加 -ed try→ tried 尝试 study→studied 学习 marry→married 结婚（4）动词为重读闭音节且词尾只有一个辅音字母时,须双写这个辅音字母再加-ed plan→planned 计划 stp→stpped 停止 prefer→preferred 更喜欢
2.不规则动词的变化规则
须根据不规则动词变化表专门记忆see-seen 看到 hear heard 听到g-gne 去 fnd-fund 发现eat-eatenl吃 beat-beat 打败
(1) 常与just, already, yet, ever , never ,befre,sfar 等连用,强调动作完成, 不强调动作的持续。 ▶Have yu ever been t Japan? 你曾经去过日本吗? ▶ I have just finished my hmewrk. 我刚刚完成我的家庭作业。
(2) fr+时间段; since+过去时间点; since+时间段+ag; since+ 一般过去时的句子。 ▶They have knwn each ther fr five years. 他们相识5年了。 ▶I haven't played sccer since I left schl. 自从离开学校后我就没踢过足球。
03 Prductin
1. I/ just / cut my lng hair .2. She / never / wrry abut / her lks .3. l/just / paint a beautiful flwer / n my face .4. Chris / always / wear / a pair f glasses .5 .Jessica / already/ change her pinin /n her lks .
Write sentences with the present perfect tense.
I have cut my lng hair.
She haven’t wrried abut her lks .
I have painted a beautiful flwer n my face.
Chirs has wrn a pair pf glasses.
Jessica has already changed her pinin n her lks.
I was the tallest student in my class. Nw, I'm still the tallest. l sat n the last rw in primary schl. Nw at junir high, I'm still sitting n the last rw. Peple always lk at me in surprise. "Yu must be gd at basketball," my classmates at primary schl always said that. Nw at junir high, my classmates say the same. In fact, I'm nt gd at basketball at all. But being tall is nt always bad. lt makes me easy t recgnise, and I can help thers reach things dwn.l culdn't accept my height, but l learn t d it nw. I'm prud f myself.
Rewrite the underlined sentences using the present perfect tense.
04 Exercise
一、单项选择1．—Ww, yur bike lks really new. I wnder ________. —My father bught it fr me as a birthday gift last year. A．hw lng have yu had it B．hw sn will yu have it C．hw lng yu have had it D．hw sn yu will have it2．The man _____ himself t the ht search list several times because f phts with famus singers. A．makes B．is making C．will make D．has made3．—Where is yur brther? I haven’t seen him recently. —Oh, he has _____ t Beijing fr a meeting. He has _____ there fr a week. A．gne; gne B．been; gne C．gne; been D．been; been
4．—Simn, yu are late. The match ________ since half an hur ag. —What a pity! All the basketball players have left. A．has started B．has been n C．has finished D．has been ver5．Tm _____ many places in China since three years ag. A．visitsB．visited C．has visited D．will visit6．______ he ever ______the film befre? A．Des; seeB．Have; seen C．Did; see D．Has; seen7．Lily says she _____ the bk fr ten days and she has t return it t the library tday. A．has brrwed B．brrwed C．has kept D．is ging t brrw
8．They have ______ finished ding the husewrk, but they haven’t dne their hmewrk ________.A．already; yet B．yet; already C．yet; yet D．already; already9．Brian ______ pera since he came t China in 2021.A．studies B．studied C．has studied D．will study10．My parents _______ Beijing n business fr a whle week, s I live with my grandparents these days.A．have been t B．have been in C．have gne t D．have arrived in11．—Is Mr. Clark there? I need t talk t him. —Srry, he _____ Shanghai n business fr three days. A．went t B．has gne t C．has been in D．has been t
12．Vlunteers in Nanjing ________ ver 1,000 trees alng Yangtze river since the ‘Prtect Mther River’ prject began in 2021.A．plant B．planted C．have planted D．will plant13．—Mm, I want t watch The Lin King n CCTV Channel 6 tnight. —Oh, dear. Cme n! It ________ fr a few minutes.A．has begun B．will begin C．has been n D．will be n14．—Why are yu in such a hurry? —Because the class ________ fr 10 minutes.A．is n B．begins C．has been n D．has begun15．Daming ________ a member f the schl space club fr tw years. A．was B．is C．will be D．has been
二、短文填空Here’s a stry abut hw I learnt t swim. Fr sme peple, s    16     is a piece f cake. They learnt hw t swim when they were c    17    . I was afraid     18     water when I was a five-year-ld girl. But I decided t l    19     t swim!I had swimming lessns. During the first tw lessns, I did b    20    . I felt very sad, s I tld my prblems t my friend, and asked h    21     t give me sme advice. My friend said I was nt patient(耐心的) enugh. I thught she was right. Frm then n, I gt up at 6 am every day a    22     went t the pl t practise. Little by little, I imprved.At the mment, I can swim b    23     than befre. And I believe that if I keep n p    24    , I will be able t swim very well in tw w     25     . Be patient and hard-wrking — this is what I learnt frm my swimming lessns. I feel very happy.
(s)wimming     (c)hildren ()f (l)earn     (b)adly  (h)er   (a)nd   (b)etter  (p)ractising (w)eeks
Rbert was a clever by and gt n well with his classmates. They all liked him and played with him. He hped t jin the army when he left the middle s    26    . Bad luck! One f his legs was h    27     in a traffic accident. S he culdn’t jin the army. He had t g    28     back t his village and help his father t manage the farm. He r    29     a lt f bks n farming and did well in it. He gt much mney and bught a few farms next t his farm. Ten years l    30    , he became the richest farmer in his village. One day, Rbert met several friends in Lndn. He asked them t v    31     his farm. They saw a beautiful huse w    32     a big garden when his friends gt there. They fund he had a lt f sheep, pigs and cws. Rbert and h    33     family warmly served the guests. The next mrning he shwed them arund his farm. It was s    34     large that they culdn’t see the ther end.
(s)chl     (h)urt    (g)     (r)ead     (l)ater     (v)isit    (w)ith     (h)is     (s)    
“It’ll t     35      yu tw days t reach the ther end f my farm by car!” Rbert said happily.“Yu must be jking, I think smething is wrng with yur car!” ne f the guests said with a smile.
26．(s)chl    27．(h)urt    28．(g)    29．(r)ead    30．(l)ater    31．(v)isit    32．(w)ith    33．(h)is    34．(s)    35．(t)ake