新概念英语第二册课件Lesson19（共20页）

这是一份新概念英语第二册课件Lesson19（共20页），共20页。PPT课件主要包含了Discussion，对过去的推测等内容，欢迎下载使用。
What kind f things can be sld ut easily? Gds at a discunt(打折) r n sales prmtin(促销) r cmplimentary tickets(免费赠送的礼券) ?
Emphases and difficulties
can , may, culd & might 缩略形式
Listen , answer and read
Listen t the tape and see if yu can answer this questin: When will the writer see the play?Read after the tape. Pay attentin t the prnunciatin and intnatin.
hurry v. (使)赶紧, (使)匆忙, 加速 n. 匆忙, 仓促 in a hurry 匆忙，迅速，赶快 hurry t… 匆忙赶往…… hurry up 快点eg. She always seems t be in a hurry. I'm nt in a hurry t change my jb.
pity n. 憾事, 怜悯, 同情 What a pity! 表示感叹 exclaim v.呼喊, 惊叫, 大声叫eg. The children exclaimed with excitement. “Yu win!” he exclaimed.
“The play may begin at any mment,” I said. “It may have begun already,” Susan answered.
at any mment = at any time 随时 at this/the mment 现在:nw at that mment 那时:just then may+ 动词原形—表示可能会发生的事情 may+动词的完成时—表示可能已经发生的事情
I hurried t the ticket ffice, “May I have tw tickets please?” I asked.“I’m srry, we’ve sld ut,” the girl said.“What a pity! Susan exclaimed.
Ticket Office
sell ut 售完eg. Sir, we have already sld ut the newspapers. sell well sell badly/prly best seller
ticket ffice 售票处
Just then, a man hurried t the ticket ffice.“Can I return these tw tickets?” He asked. “Certainly,” the girl said.
just then 就在那时 = at that time/ mment return v. 回来; 回去 ; 归还eg. Spring will return t us. Return the bk t the library.
I went back t the ticket ffice at nce. “Culd I have thse tw tickets please?” I asked.“Certainly,” the girl said. “but they are fr next Wednesday’s perfrmance. D yu still want them?” ticket fr+事情 ticket t+地点 May I have a ticket t Beijing? May I have a ticket fr the sprts meeting?
sadly adv. 悲哀地，悲伤地，不幸地 eg. She lked at him sadly. may/might as well + 动词原形: 还是……好，不妨…… (无可奈何) had better +动词原形: 最好(积极心态)eg. I may as well take the umbrella with me. If that’s the case, I may as well have a try.may as well + 动词原形（+as+动词原形=与其）Yu may as well have a rest as talk t him.We may as well nt d it as yu leave it half dne.
Hw many ways are there t make a request?
Will yu let me use yur phne please? Can I use yur phne please? Culd I use yur phne please? May I use yur phne please? Might I use yur phne please?
Can (May) 我可以...吗?Can 你可以...吗?Culd 我现在可以...吗? (比can I 更礼貌些/更委婉)
情态动词表推测 must, can, may+动词原形：对现在/未来的推测 must, can, may+have dne ：对过去的推测
1.may/might+d 可能 may/might +have dne 可能已经 2. can/culd d 可能 can/culd +have dne 可能已经 3. must d 一定是 must have dne 一定已经习惯上，can用在否定句和疑问句中，表推测;must 的否定形式用can代替。
Since(因为) the rad is wet, it must have rained last night. He can't have missed the way. I drew him a map. “The dictinary has disappeared. Wh culd have taken it?” I can't find my keys. I may / might have left them at the schl yesterday. Jhn may/might nt have passed the exam; he lks very sad. Can/Culd he have passed the exam?I think that he culdn’t/can't have gne abrad. I saw him just nw.
1. must, can,culd, may,might+动词原形：对现在/未来的推测must : 一定, 很可能 She must be a mdel.may : 有可能 She may be a mdel.can :有可能 she can be a mdel.
2.情态动词+ have +过去分词 1) may (might) / can (culd) +have dne sth, 推测可能已经发生的事情　Philip may (might) / can (culd) have been hurt seriusly in the car accident. 2) must + have dne sth.，语气较强，“肯定”，“一定”。 　---Linda has gne t wrk, but her bicycle is still here. 　---She must have gne by bus.
3) ught t /shuld have dne sth. 本应做而事实上没做。 　　 ught nt t /shuld nt have dne sth 否定句表示“不该做某事而做了”　Yu ught t/shuld have been mre careful in this experiment. He ught nt t have thrwn the ld clthes away.（事实上已扔了。） ught t 在语气上比shuld 要强。4) needn't have dne sth　 本没必要做某事 I dressed warmly fr the trip, but I needn't have dne s. The weather was ht.5) wuld like t have dne sth　 本打算做某事　 I wuld like t have read the article, but I was very busy then.