牛津译林版（2024）八年级下册（2024）Grammar优秀ppt课件

这是一份牛津译林版（2024）八年级下册（2024）Grammar优秀ppt课件，共30页。PPT课件主要包含了Have a try，Housing，Culture，Industry，Transport，Pair work，Homework等内容，欢迎下载使用。
Q: What changes have yu seen in Shenzhen?
Shenzhen, a city in_________China, has develped frm______________________ int___________________.It has wn an hnur frm UNESCO fr being a rle mdel is the first city in the wrld t use ____________fr almst all its buses and taxis.It has becme _____________f China’s develpment.
a fishing village
a tp high-tech city
encuraging reading amng the public
green energy
Read and find ut mre abut Shenzhen’s changes.
Q: What tense is used in these sentences?
1. He’s lived there since he finished cllege.2. Transprt has als imprved a lt. Peple can get arund the city easily.3. I’ve nly been there nce.
Present perfect tense 现在完成时
_________+_________
the past participles f verbs
He’s lived there since he finished cllege.自大学毕业以来，他就一直住在那里。
We use the present perfect tense t talk abut: ① an actin that started in the past and cntinues t the present;（从过去持续到现在的动作或状态）;
has lived there
finished cllege
When t use the present perfect tense
e.g. Mr Chen has lived in Sunshine Twn since he was brn.
e.g. 陈先生自从出生就住在阳光镇。
Transprt has als imprved a lt. 交通也有了很大的改善。（言下之意：人们出行从而变得方便。）
② an actin that happened in the past and has a cnnectin with the ______________ (past, present);（动作发生在过去但对现在有一定的影响）;
peple can get arund the city easily
Transprt imprved
e.g. I have lst my mbile phne.
e.g.我的手机丢了。
I have been t Beijing many times.我去过北京好多次了。
③ hw many times an actin has happened up t ______________(the present, sme pint in the future).（表示某个动作从过去到现在发生的次数）
the present
e.g. I have heard the sng many times.
e.g. 我听过这首歌很多次了。
Frm the past participles f verbs
Rules f frming the past participles f regular verbs
have/has + dne
Rules f frming the past participles f irregular verbs
have/has+ nt + dne
Frm the sentence structures
Have/Has + subject+
Yes, subject + have/has.
N, subject + haven’t/hasn’t.
She has cleaned the kitchen. (改为否定句) She ________ cleaned the kitchen.2. They have visited sme interesting places in China. (改为一般疑问句) ______ they _______ ____ interesting places in China?3. They have brrwed ten bks frm the library. (对划线部分提问) _____ _______ bks ______ they _________ frm the library?
Have visited any
Hw many have brrwed
has changed
has imprved
haven’t visited
There are many changes in Sunshine Twn...
Q: Why shuld we use the present perfect tense?
❀since + a specific time 过去的时间点 has lived here since 2000. + a sentence in the simple past tense 从句(一般过去时)e.g. He has lived here since he came t Beijing.❀ fr + a perid f time 一段时间 e.g. He has lived here fr 5 years.
Time adverbials
❀ ver / in the (past / last) years “在(过去的)这几年间”
e.g. Great changes __________ (take) place ver / in the past ten years.
e.g. We ____________ (learn) many English sngs s far.
have learned
❀ s far, up t nw, until / till nw “到目前为止”
❀ already “己经” 用于肯定句 句中(助后实前)/句末
e.g. I’ve already had breakfast. = I’ve had breakfast already.
“还(没)”用于否定句 句末“己经” 用于疑问句 句末
I haven’t had breakfast yet. Have yu had breakfast yet?
当在肯定陈述句中含有already时，在转换成否定句或疑问句时，要把句中的already 去掉，在句末加上yet.
I _______already ________(cllect) sme stamps.
否：I ________ __________ any stamps______.
疑：________ yu __________ any stamps______?
❀ ever “曾经” 用于肯定句/一般疑问句 句中
❀ never “从未” 用于否定句 句中
e.g. Have yu ever eaten Beijing Duck?
e.g. He has never read the stry.
—Have yu ______seen the mvie?—Yes, I have.never B. ever C. just D. yet
❀ just “刚刚”，常用于肯定句中e.g. I have just finished lunch. 我刚吃过午饭。
just →present perfect tense ；just nw→simple past tense—I’ve _____ finished the English hmewrk. What abut yu?  —I finished it ____t.just nw; just         B. just; just        C. just nw; just nw    D. just; just nw
❀ recently “最近”
e.g. I have met her recently.
❀ befre “以前” 句末
e.g. I’ve seen it befre.
❀ time adverbials indicating the number f times 表示次数
e.g. He_________ (see) the film twice.
Q: Why shuld we use the simple past tense?
Simple past tense
Present perfect tense
have/has + dne
yesterday, in 1980, last week, … ag, just nw, the ther day等
fr, since, ever, never, just, yet, recently, befre, 次数, in the past years, ver the years, s far 等
表示过去某时发生的动作或存在的状态。“重在过去”
持续到现在的动作或状态；强调过去事情对现在的影响;到目前为止动作发生的次数。 “旨在当前”
Q: What’s the difference between present perfect tense and simple past tense?
has wrked
have visited
指代前文提到的某个过去时间点之后，动作从该时间点开始持续或重复到现在。
have fallen
单数形式：there has been + 单数名词复数形式：there have been + 复数名词
What are the changes in yur hmetwn?
We used t live in small huses, but mst families have mved int new buildings.
The quality f life
A: Hi! Lng time n see. I heard yu went back t yur hmetwn last mnth. Hw was the visit?B: Oh, it’s amazing!_____________________________________________.A: Ww, that’s great. My hmetwn has changed a lt t.___________________________________________________________________________.B: Really? ____________________________________________________.A: That’s cl. In my hmetwn, __________________________________.B: Times really have changed. I think ur hmetwns will becme even better in the future.A: I agree. I can’t wait t g back during the hliday t see mre changes!
Present perfect tense
Frm the past participles f verbs
Time adverbials
❀since + a specific time/+ a sentence in the simple past tense ❀ fr + a perid f time
Cmpulsry hmewrk:(1) Review the grammar rules.(2) Write an article abut the changes in yur hmetwn, using the present perfect tense.Optinal hmewrk:Interview yur classmates and knw mre abut the changes in their hmetwn.