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牛津译林版八年级下册Grammar课前预习ppt课件
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这是一份牛津译林版八年级下册Grammar课前预习ppt课件，共23页。PPT课件主要包含了Have a try，Chat time，Exercises等内容，欢迎下载使用。
一、现在完成时的结构： _______________ + _________________
have/has 动词过去分词
Present perfect tense
二、现在完成时的用法1. T talk abut an actin that started in the past and cntinued t the present. 表示从过去某一时间开始，一直延续到现在的动作，并且有可能还会延续下去。 其谓语动词通常是延续性动词，且句中常有表示一段时间的时间状语，如：since+某个时间点，fr+一段时间。
e.g. Eddie has lived with Millie since he was brn. He has lived in the small twn fr ten years.
2. T talk abut an actin that happened in the past and has a cnnectin with the present. 表示过去已经发生或已经完成的某一动作对现在造成的影响或结果，并且此影响和结果现在仍然存在。常与副词 befre, already, recently, yet, ever, just, never 等连用。
e.g. Eddie has eaten Hb’s fd. (Eddie ate the fd and nw Hb has nthing t eat.)
He has already left the classrm.(He isn’t in the classrm nw.)
3. T talk abut hw many times an actin has happened till nw. 表示到目前为止一个动作做了多少次。
e.g. My mther has read the bk twice. I have already read the bk many times.
三、动词过去分词的构成A. 规则动词
1. brrw2. hpe3. make4. get5. plan6. cry
7. send8. watch9. say10. grw11. hit12. enjy
brrwedhpedmadegtplannedcried
sentwatchedsaidgrwnhit enjyed
Mr Wu wants the students t practice using the present perfect tense. Help them write the past participles f the verbs belw.
A shrt test
I/We/Yu/They + have + p.p（过去分词）+其它.He/She/It + has + p.p（过去分词）+其它.
Practice:1. 他们已经完成家庭作业了。 They ______________ (finish) their hmewrk. 2. 他已经完成家庭作业了。 He ______________ (finish) his hmewrk.
have finished
has finished
I/We/Yu/They + have nt/haven’t + p.p +其它.He/She/It + has nt/hasn’t + p.p +其它.
Practice:1. They _______________________ (nt finish) their hmewrk yet(还未). 2. He ________________________ (nt finish) his hmewrk yet.
have nt/haven’t finished
has nt/hasn’t finished
（3）一般疑问句及回答：
Have/Has +主语+ p.p. +其他?
特殊疑问词+ have/has +主语+ p.p +其它？
e.g. The girl has learned English fr 6 years. Hw lng has the girl learned English? I have eaten tw apples fr breakfast. What have yu eaten fr breakfast?
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. The pr dg has died. (改一般疑问句并作否定回答）---_________ the pr dg _________? ---N, it __________.4. They have brrwed ten bks frm the library. (对划线部分提问) _____ _______ bks ______ they _________ frm the library?
Have visited any
Has died
Hw many have brrwed
五、与现在完成时连用的时间状语
just 刚刚；already 用于陈述句，表示“已经”，否定句中改为yet；yet 用于疑问句，表示“已经”，用于否定句表“还未”；ever 曾经；never 用在句中表示否定，从未，从不；recently 近来，最近；fr+一段时间；since+过去某个时间点；befre……
[辨析] already 与 yet
Practice:1. She has already finished her hmewrk. (改为否定句) She ________ finished her hmewrk ______.
hasn’t yet
Mr Wu asks the students t cmplete the sentences belw using the present perfect tense. Help them cmplete the sentences.
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.5. My parents ______________ (nt cme) back yet.6. Our teacher ___________ (teach) us a lt abut the histry f China.
has visited
has repaired
haven’t seen
haven’t cme
Millie and Sandy are talking abut a film abut the histry f Beijing. Cmplete their cnversatin with the crrect frms f the verbs in brackets.
M: ________ yu ________ (see) any films recently, Sandy?S: N, I haven’t. What abut yu?M: Well, I ________ (see) ne last Saturday.S: What is it abut?
Have seen
M: It’s abut the changes in Beijing ver the past century. Frm this film, I ___________ (learn) mre abut Beijing’s past and present.S: Oh, I think I ___________ (hear) abut the film. D yu plan t see it again?M: Yes, I’d like t.
have learnt
Useful phrases and expressins
1. teach sb. a lt abut… 教某人许多关于……2. the histry f China 中国历史3. ver the past century 在上个世纪4. learn mre abut… 对……了解更多5. hear abut/f 听说6. plan t d sth. 计划做某事
1. I ___________ (study) in America fr ver three years.2. The yung man __________ (live) alne since he graduated frm cllege.3. This is the best film that I __________ (see) s far.4. —Hell. Can I speak t Miss Brwn? —Srry, she __________ (fly) t Canada already. She'll be back in a week.5. In the past tw weeks, the artist __________ (draw) many pictures abut his hmetwn.6. I ___________ (knw) Jimmy fr ver tw days and nw we are gd friends.
have studied
7. —Why are the windws s dirty? —Because we _____________ (nt clean) them fr a very lng time.8. He _____________ (nt finish) the hmewrk yet. 9. My family __________ (live) in Nanjing since 1996.10. They ________ already _________ (decide) t g t Kunming fr the hliday. 11. The girl ________________ (learn) English fr abut tw years. 12. _____ Tm ________ (write) letters t yu recently?
haven’t cleaned
hasn’t finished
have decided
has learned/learnt
Has written
一、现在完成时的结构： _______________ + _________________
have/has 动词过去分词
Present perfect tense
二、现在完成时的用法1. T talk abut an actin that started in the past and cntinued t the present. 表示从过去某一时间开始，一直延续到现在的动作，并且有可能还会延续下去。 其谓语动词通常是延续性动词，且句中常有表示一段时间的时间状语，如：since+某个时间点，fr+一段时间。
e.g. Eddie has lived with Millie since he was brn. He has lived in the small twn fr ten years.
2. T talk abut an actin that happened in the past and has a cnnectin with the present. 表示过去已经发生或已经完成的某一动作对现在造成的影响或结果，并且此影响和结果现在仍然存在。常与副词 befre, already, recently, yet, ever, just, never 等连用。
e.g. Eddie has eaten Hb’s fd. (Eddie ate the fd and nw Hb has nthing t eat.)
He has already left the classrm.(He isn’t in the classrm nw.)
3. T talk abut hw many times an actin has happened till nw. 表示到目前为止一个动作做了多少次。
e.g. My mther has read the bk twice. I have already read the bk many times.
三、动词过去分词的构成A. 规则动词
1. brrw2. hpe3. make4. get5. plan6. cry
7. send8. watch9. say10. grw11. hit12. enjy
brrwedhpedmadegtplannedcried
sentwatchedsaidgrwnhit enjyed
Mr Wu wants the students t practice using the present perfect tense. Help them write the past participles f the verbs belw.
A shrt test
I/We/Yu/They + have + p.p（过去分词）+其它.He/She/It + has + p.p（过去分词）+其它.
Practice:1. 他们已经完成家庭作业了。 They ______________ (finish) their hmewrk. 2. 他已经完成家庭作业了。 He ______________ (finish) his hmewrk.
have finished
has finished
I/We/Yu/They + have nt/haven’t + p.p +其它.He/She/It + has nt/hasn’t + p.p +其它.
Practice:1. They _______________________ (nt finish) their hmewrk yet(还未). 2. He ________________________ (nt finish) his hmewrk yet.
have nt/haven’t finished
has nt/hasn’t finished
（3）一般疑问句及回答：
Have/Has +主语+ p.p. +其他?
特殊疑问词+ have/has +主语+ p.p +其它？
e.g. The girl has learned English fr 6 years. Hw lng has the girl learned English? I have eaten tw apples fr breakfast. What have yu eaten fr breakfast?
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. The pr dg has died. (改一般疑问句并作否定回答）---_________ the pr dg _________? ---N, it __________.4. They have brrwed ten bks frm the library. (对划线部分提问) _____ _______ bks ______ they _________ frm the library?
Have visited any
Has died
Hw many have brrwed
五、与现在完成时连用的时间状语
just 刚刚；already 用于陈述句，表示“已经”，否定句中改为yet；yet 用于疑问句，表示“已经”，用于否定句表“还未”；ever 曾经；never 用在句中表示否定，从未，从不；recently 近来，最近；fr+一段时间；since+过去某个时间点；befre……
[辨析] already 与 yet
Practice:1. She has already finished her hmewrk. (改为否定句) She ________ finished her hmewrk ______.
hasn’t yet
Mr Wu asks the students t cmplete the sentences belw using the present perfect tense. Help them cmplete the sentences.
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.5. My parents ______________ (nt cme) back yet.6. Our teacher ___________ (teach) us a lt abut the histry f China.
has visited
has repaired
haven’t seen
haven’t cme
Millie and Sandy are talking abut a film abut the histry f Beijing. Cmplete their cnversatin with the crrect frms f the verbs in brackets.
M: ________ yu ________ (see) any films recently, Sandy?S: N, I haven’t. What abut yu?M: Well, I ________ (see) ne last Saturday.S: What is it abut?
Have seen
M: It’s abut the changes in Beijing ver the past century. Frm this film, I ___________ (learn) mre abut Beijing’s past and present.S: Oh, I think I ___________ (hear) abut the film. D yu plan t see it again?M: Yes, I’d like t.
have learnt
Useful phrases and expressins
1. teach sb. a lt abut… 教某人许多关于……2. the histry f China 中国历史3. ver the past century 在上个世纪4. learn mre abut… 对……了解更多5. hear abut/f 听说6. plan t d sth. 计划做某事
1. I ___________ (study) in America fr ver three years.2. The yung man __________ (live) alne since he graduated frm cllege.3. This is the best film that I __________ (see) s far.4. —Hell. Can I speak t Miss Brwn? —Srry, she __________ (fly) t Canada already. She'll be back in a week.5. In the past tw weeks, the artist __________ (draw) many pictures abut his hmetwn.6. I ___________ (knw) Jimmy fr ver tw days and nw we are gd friends.
have studied
7. —Why are the windws s dirty? —Because we _____________ (nt clean) them fr a very lng time.8. He _____________ (nt finish) the hmewrk yet. 9. My family __________ (live) in Nanjing since 1996.10. They ________ already _________ (decide) t g t Kunming fr the hliday. 11. The girl ________________ (learn) English fr abut tw years. 12. _____ Tm ________ (write) letters t yu recently?
haven’t cleaned
hasn’t finished
have decided
has learned/learnt
Has written
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