人教版高中英語(yǔ)必修三unit1festivalsaroundtheworldperiod2課件(編輯修改稿)
2024-12-23 05:02 本頁(yè)面
【文章內(nèi)容簡(jiǎn)介】 might be at home now. Helen may go on the trip with us, but she isn’t very sure yet. She may / might have read it in the paper. He may not have finished reading the book. 情態(tài)動(dòng)詞 用 法 will 表請(qǐng)求 （第二人稱） 表意志 ,意愿 表某種傾向或習(xí)慣 would 更客氣的 請(qǐng)求 過(guò)去的意志 ,意愿 過(guò)去的傾向或習(xí)慣 If you will help me with my English, I will be very happy. I promised that I would do my best. Will you tell me something about your hometown? Would you please speak again more slowly? He will always take a walk after supper. During the vacation he would often visit me. 情態(tài)動(dòng)詞 用 法 shall 征求對(duì)方意見(jiàn) （第一，三人稱） 表示命令，警告，威脅或允諾 （第二， 三人稱） should / ought to 表示勸告 ,建議 ,命令或責(zé)任 “應(yīng)該，必須” 表示推測(cè)，“理應(yīng)， 估計(jì)，大概，可望” should 還可表示“竟然” Shall we start off now? You shall do as I say. Tell him that he shall have the book tomorrow. You shall be punished if you do that again. You shouldn’t /oughtn’t to smoke so much. She shouldn’t have left without saying a word. It’s five o’clock. John should be at home now. We have prepared a fridge of good and drinks. That ought to be enough for the party. It’s a pity that he should be so rude to a lady. 情態(tài)動(dòng)詞 含義 否定式 注意點(diǎn) must 表必要 “必須” needn’t “不必” ( 區(qū)別 have to) 有時(shí)表“ 偏要 ” 表推測(cè) “一定” can’t “不可能” 只能 用于 肯定 句，不能 用于 否定、疑問(wèn)句 — Must I finish all assignments at a time? —Yes, you must. / No, you needn39。t. I don’t like this TV set. We must buy a new one. There was no more bus. They had to wa
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