專升本輔導(dǎo)情態(tài)動(dòng)詞-資料下載頁(yè)
2025-05-11 05:37本頁(yè)面
【正文】 are 用作情態(tài)動(dòng)詞常表示現(xiàn)在或?qū)?lái)時(shí)間，有時(shí)也可表示過(guò)去，可用于肯定句，否定句，疑問(wèn)句或 if,unless等引導(dǎo)的從句 ? He dare go deep into the mountains alone. ? She dare say what she thinks. ? He dare not criticize her. ? She never dare speak in public. ? No one dare go there. ? How dare you do such a thing? ? Dare you go home alone? ? I wonder if she dare e home. ? I wonder whether she dare disclose the secret. 2) dare 用作行為動(dòng)詞時(shí)常用作及物動(dòng)詞，表示“敢于，敢冒，敢于面對(duì)，向 …… 挑戰(zhàn)”后可跟名詞，代詞或不定式 ? He dares any difficulties. ? He dares me to jump over the wall. 他向我挑戰(zhàn)跳過(guò)那堵墻 ? I dare you to do it. 量你也不敢 ? He dared to swim in the river. ? She didn’t dare to tell her mother about it. ? I wonder how he dared to say so 注： Dare同 shall, will, should, would, have, had等連用時(shí)，常用作行為動(dòng)詞 . ? I will not dare to climb the tree. ? He would never dare to do it. ? They have never dared to swim in the lake. 七 . 情態(tài)動(dòng)詞 +動(dòng)詞完成式的用法 1. may和 might +動(dòng)詞完成式 ? 1）常用于推測(cè)過(guò)去的行為，表示“可能已經(jīng)” ? He may have received the letter. ? It might have happened last October. ? 2）也可表示將來(lái)某時(shí)之前的情況 ? He may have left when you get there. ? She might have died before he returns. ? 3）表示現(xiàn)在已經(jīng)完成的情況 ? He might have arrived now. ? She may have got up now. 2. can / could +動(dòng)詞完成式 1) 表示本來(lái)能做而沒(méi)做的事，有一種對(duì)過(guò)去未付 ? 朱實(shí)施的事情的惋惜 ? I could have passed the exam, but I was too careless. ? In that case we could have done it better. 2）對(duì)過(guò)去某種事實(shí)或行為的推測(cè) ? Where can / could she have gone? 3. must +動(dòng)詞完成式 , 表示對(duì)過(guò)去行為的推斷，具 有較大的可能性，譯為“一定，想必” ? She must have gone through a lot. ? 她一定吃了不少苦 ? He must have known about it. 4. needn’t +動(dòng)詞完成式和 didn’t need to do 1） needn’t +動(dòng)詞完成式 ,表示一種已經(jīng)做過(guò)的但并無(wú)比要的行為 ? You needn’t have watered the flowers, for it is going to rain. 2） didn’t need to do, 表示沒(méi)有必要做某事，實(shí)際上也沒(méi)做。 ? I didn’t need to clean the windows. My sister did it. 八 . 情態(tài)動(dòng)詞 +動(dòng)詞進(jìn)行式該結(jié)構(gòu)表示“應(yīng)當(dāng)正在 …… 可能正在 ……” ? She might be still thinking of you. ? What can / could she be doing now? ? She may / might be watering the flowers. ? She must be watering the flowers. ? She can’t be watering the flowers. She should / ought to be watering the flowers. 九 . 1) used to + V. ( usedn’t to + V. / didn’t use to + V. Used + S + to + V. / did + S + use to + V.) 2) had better / best (not) +V.(Had +S +better +V.) ? 3) would rather ( not ) +V. ? You had better not go by air. ? What had we better do? ? Hadn’t we better leave now? ? Had we better not leave now? ? Better say yes, if he asks you. ? Wouldn’t you rather work here? ? I would rather have e back yesterday afternoon.
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