情態(tài)動(dòng)詞相關(guān)知識(shí)(編輯修改稿)
2024-07-16 23:01 本頁(yè)面
【文章內(nèi)容簡(jiǎn)介】 ll, would用于疑問(wèn)句表示說(shuō)話人向?qū)Ψ教岢稣?qǐng)求或詢問(wèn),用 would 比 will 更婉轉(zhuǎn),客氣。 It39。s hot. Will you open the windows? 天氣太熱了,你能打開(kāi)窗戶嗎? Will you help me to work it out? 你能幫我解這道題嗎? Would you like some coffee？ 給你來(lái)點(diǎn)咖啡怎樣？ Shall, should表示命令,警告,允諾,征求,勸告,建議驚奇。 You should hand in the exercise book. 你應(yīng)該交作業(yè)本兒了。 This should be no problem. 這應(yīng)該沒(méi)問(wèn)題。 Shall we go now. 我們現(xiàn)在可以走了嗎? Why should I meet him？ 為什么我要見(jiàn)他? have to,不得不,必須,表示客觀條件只能如此, 而must 則表示主觀思想必須。 I have to go now. 我現(xiàn)在得走了。 I have to cook for my child. 我得給孩子做飯。 You must be here on time next time. 你下次一定要按時(shí)來(lái)。 We must go to get the timetable ourselves. 我們一定要自己去拿時(shí)刻表。情態(tài)動(dòng)詞 (Model Verbs) 又稱(chēng)為情態(tài)助動(dòng)詞 (Model Auxiliaries), 主要有can, may, must, could, might, shall , should, will, would, ought to, need, dare等。情態(tài)動(dòng)詞與其他動(dòng)詞連用表示說(shuō)話人的語(yǔ)氣。情態(tài)動(dòng)詞可表達(dá)建議、要求、可能和意愿等。情態(tài)動(dòng)詞沒(méi)有人稱(chēng)和數(shù)的變化。在大學(xué)英語(yǔ)考試中，情態(tài)動(dòng)詞部分重點(diǎn)測(cè)試以下內(nèi)容： （1）情態(tài)動(dòng)詞+動(dòng)詞完成式: must have done （2）情態(tài)動(dòng)詞+動(dòng)詞進(jìn)行式: must be doing （3）情態(tài)動(dòng)詞+動(dòng)詞完成進(jìn)行式: must have been doing （4）某些情態(tài)動(dòng)詞的特殊用法: need 一、情態(tài)動(dòng)詞+動(dòng)詞完成式 情態(tài)動(dòng)詞+動(dòng)詞完成式即“情態(tài)動(dòng)詞+ have + done分詞”，表示對(duì)過(guò)去行為或動(dòng)作進(jìn)行推測(cè)、評(píng)論或判斷。 1. must have donemust have done 表示對(duì)過(guò)去某事的肯定猜測(cè)。其否定或疑問(wèn)形式都用can(could) 來(lái)表示. 例如： Since the road is wet, it must have rained last night.He can’t have missed the way. I drew him a map.“The dictionary has disappeared. Who could have taken it?”當(dāng)然對(duì)現(xiàn)在發(fā)生或?qū)?lái)發(fā)生的事情,要用must do 表示猜測(cè), 否定為can’t do.He must understand that we mean business.You must be hungry after a long walk. / might have done may / might have done 表示推測(cè)過(guò)去某事“也許” 比 might 表示的可能性在說(shuō)話人看來(lái)稍大些。例如：I can’t find my keys. I may / might have left them at the school yesterday.3. could have done 在肯定句型中, 往往用作委婉的批評(píng). 本應(yīng)該做什么,而沒(méi)做。 有時(shí)也用作猜測(cè).You could have told us earlier.Tom could have taken the dictionary.4. ought to / should have done和 ought not to / shouldn’t have done ought to / should have done 和 ought not to / shouldn’t have done 用于對(duì)已發(fā)生的情況表示“責(zé)備”、“不滿”，分別表示“本應(yīng)該…”和“本不應(yīng)該…”。例如： 1）With al
教學(xué)課件相關(guān)推薦
鄂ICP備17016276號(hào)-1