初中語法講解：情態(tài)動詞(2)-1

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[00:10.28]1 shall作為情態(tài)動詞用于第二、三人稱，表示說話人的意愿，

[00:38.31]有“命令，警告，威脅，強制，允諾”等意思

[00:46.12]You shall do as Isay.

[00:56.76]Tell her that sheshall have the moneynext week.

[01:10.42]2 在疑問句中，shall用于第一、三人稱，表示說話人征詢對方的意見或請求指示

[01:21.07]Shall I turn on theradio?Shall he come atonce?

[01:50.69]3 should表示“勸告，建議”

[01:57.61]We should keep ourpromise.You should help eachother.

[02:20.14]You should have comehere earlier.

[02:39.83]We shouldn't haveleft the classroom w-ithout the teacher'spermission.

[03:10.88]4 should還可以表示“預測，可能”

[03:14.96]He should be here bynow.They should be onthe playground.

[03:36.25]will和would

[03:44.41]1 will表示“意志，意愿”，可以用于各種人稱

[03:49.73]I will tell you allabout itHe will never gothere again.

[04:02.50]2 在疑問句中用于第二人稱時，表示詢問對方的意愿或向?qū)Ψ教岢稣埱?/p>

[04:12.44]Will you have a cupof tea?

[04:16.52]His father will tryto mend the bikehimself.

[04:31.24]3 表示預料或習慣性動作，意思是“總是，慣于”

[04:38.69]Fish will die out ofwater.

[04:49.69]The girl will sitthere reading booksfor hours.

[05:03.35]4 would表示過去時間的“意志，愿望”，用于各種人稱

[05:12.05]I promised that Iwould buy her a car.They said they wouldbe careful next time.

[05:37.77]5 would表示說話人向?qū)Ψ教岢稣埱螅Z氣委婉，指的是現(xiàn)在時間

[05:49.83]I would like(I'dlike)to study abroad.Would you like someapples?

[06:08.46]6 表示過去的習慣The little boy wouldsit like that forhours.

[06:22.30]Every Christmas wewould go and see him.

[06:39.86]ought to

[06:49.30]1 ought to表示應該做某事，與should相比，語氣稍強

[06:58.43]We ought to take theteacher's advice.

[07:12.03]She ought to lookafter her studentsbetter.

[07:21.87]Ought they to startnow?Yes,I think theyought to

[07:40.38]He ought to be puni-shed,oughtn't he?

[08:02.17]2 ought to have done,ought not to havedone

[08:16.94]You ought to havethrown the coat away.(=but you did not)

[08:29.82]He oughtn't have hithim.(=but you did)

[08:57.47]情態(tài)動詞練習填空

[09:07.79]1 You[needn't](not)talk so loud;I can hear you.

[09:28.88]2 You[shouldn't/oughtn't to](not)talk so loud;you'll wake the baby.

[09:55.12]3 Who[can]tell thedifference betweenthese two words?