初中英语人教新目标 (Go for it) 版八年级下册Section A精品ppt课件
展开enjy dinner with my family
A: Mum, culd I g ut fr dinner with my friends?B: Sure, that shuld be OK.
A: Culd I get smething t drink with my friends after the mvie?B: Sure, yu can.
A: Culd I get smething t drink with my friends after the mvie?B: N, yu can’t, yu have a basketball game tmrrw.
take the dg fr a walk
A: Can yu please take the dg fr a walk?B: OK, but I want t watch ne shw first.
take ut the rubbish
A: Can yu please take ut the rubbish?B: Yes, sure.
Grammar Fcus
只作情态动词的 can / culd, may / might, ught t, must可情态可实义的 need, dare 可情态可助动词的 shall / shuld, will / wuld相当于情态动词的 have t, used t
情态动词不能单独做谓语, 除ught和have外, 后面只能接不带t的不定式。 情态动词没有人称, 数的变化, 但有些情态动词, 如can、will也有一般式和过去式的变化。情态动词的“时态”形式并不是时间区别的主要标志, 不少情况下, 情态动词的现在式形式和过去式形式都可用来表示现在时间、过去时间和将来时间。
1) can的主要用法是: A. 表示体力或脑力的能力: e.g. The girl can dance very well. B. 表示说话的推测﹑事物的可能性等: e.g. Can the news be true? C. 在口语中, can可以表示请求或允许: e.g. Can I sit here?
can表示“能够”时与短语be able t同义,但can只用于一般现在时或过去时,而后者可用于各种时态。另外,can表示个人有某种能力,而be able t表示某人通过努力、克服困难做成某事,相当于succeed in ding sth.;叙述过去事实时,最好用was / were able t,因为culd只表示过去具有某种能力。
如:Can yu understand the different kinds f English these peple are using?Tw years later, he was able t speak very gd Chinese.
2) culd的主要用法是: A. culd 是can的过去式, 表示与过去有关的 能力和推测: e.g. We all knew that the yung man culdn’t be a dctr. B. culd可以代替can表示请求, 但语气较can 客气、委婉:
e.g. Culd yu lend me yur dictinary? Culd I use yur bike?3) can和culd接动词的完成形式,表示可能已经做某事。can用在否定和疑问句中,表示不相信、怀疑等态度。e.g. They can’t have gne ut because the light is still n.
以culd或wuld提问时,不能再以culd或wuld作答,而应该用can或will。如:—Culd I brrw yur dictinary?—Yes, f curse yu can.
culd与can都是情态动词,culd是can的过去式。二者都可用于表示请求,但是用法稍有不同。can 表示一般性的请求,语气随便,常用于熟人之间或长辈对晚辈,上级对下级的场合。e.g. Can yu tell us yur stry,Tny? 托尼,你能给我们讲讲你的故事吗?
culd与can的区别
culd表示有礼貌的请求,语气委婉,常用于非熟人之间或晚辈对长辈,下级对上级的场合。比如: — Culd yu tell us if it snws in winter in Australia? — Sure. — 请告诉我们,澳大利亚冬天下雪吗?— 当然可以。
注意:1. 提出委婉的请求在回答中不可用culd。 A: Culd I have the televisin n? B: Yes, yu can. / N, yu can’t.2. 在否定、疑问句中表示推测或怀疑用culdn’t。 He culdn’t be a bad man. 他不大可能是坏人。
may和might表示允许或请求;表示没有把握的推测;may放在句首,表示祝愿。 May Gd bless yu! He might be at hme.注意: might 表示推测时,不表示时态,只是可能 性比may小。
have t和must
1. 两词都是“必须”的意思,have t 表示客观的需要,must 表示说话人主观上的看法,即主观的必要。My brther was very ill, s I had t call the dctr in the middle f the night.我弟弟病得很厉害,我只得半夜里把医生请来。(客观需做此事)He said that they must wrk hard. 他说他们必须努力工作。(主观上要做这件事)
2. have t 有人称、数、时态的变化,而must只有一种形式。但must 可用于间接引语中表示过去的必要或义务。He had t lk after his sister yesterday.
3. 在否定结构中: dn’t have t 表示 “不必”,mustn’t 表示“禁止”。Yu dn’t have t tell him abut it. 你不一定要把此事告诉他。Yu mustn’t tell him abut it. 你一定不要把这件事告诉他。
Write R fr requests and P fr permissins. Then match each ne with the crrect respnse.
____ Culd I hang ut with my friends after the mvie?2. ____ Culd yu please pass me the salt?3. ____ Culd I brrw that bk?4. ____ Culd yu help me d the dishes? 5. ____ Culd yu lend me sme mney?
Yes, here yu are. Hmm. Hw much d yu need?Yes, sure. N prblem. I finished reading it last night.d. Yes, but dn’t cme back t late.e. N, I can’t I cut my finger and I’m trying nt t get it wet.
1 — d 2 — a 3 — c 4 — e 5 — b
Fill in the blanks in the cnversatin.
A: I hate t ______ chres.B: Well, I hate sme chres t, but I like ther chres.A: Really? Great! ________ I ask yu t ____ me with sme chres then?B: What d yu need help with? A: ______ yu please _____ my clthes fr me?B: I dn’t want t d that! It’s bring!
A: OK. Then ______ yu ________ d the dishes fr me?B: Sure, n prblem. But _______ we g t the mvies after that?A: Sure, I’ll finish my hmewrk while yu help me with the dishes. Then we can g t the mvies.
Make a list f things yur grup needs t d fr a camping trip. Then discuss wh will d them and cmplete the chart.
A: Culd yu please bring Liu Chang?B: Sure. And culd yu please …?C: Srry, I can’t. I have t…
I. 用情态动词can/culd, can’t, may, must, mustn’t, needn’t填空。 1. — _______ yu cme and play with us nw? — I’m afraid I _____. I _____ d the cking. I ____ cme later.2. — _______ we clean the windws tday? — N, yu _______. Yu ____ clean them tmrrw.
3. — ____ I watch TV this evening, mum? — N, yu _______. Wrk _____ cme first.4. — ____ I cme in, please? — Yes, please.5. Excuse me. ____ yu tell me the way t the cinema?
A: Culd yu help me, please?B: ___________!A: I want t ________these bxes t my hme Let’s ______ the bxes _____ the car nw.B: _______right.A: Oh, the bx ___ heavy. Can yu carry it?B: Yes, I______.A: _______ yu _____ it t my rm?B: Certainly.
— Can I ____ Rbinsn Cruse? Mrs Zha.— Sure, it’s very interesting, but yu can nly ____ it fr tw weeks. A. brrw; lend B. lend; brrw C. brrw; keep D. lend; keep
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