情態(tài)動詞復習(2)-文庫吧
2025-07-20 16:33 本頁面
【正文】 ould + have + ought to 表示本應該做而未做。 should 過去式 語氣更委婉 Eg. You should have been five minutes ago. 7 Will/ would 表示意愿 I’ll try my best to overe the difficulty. 表示意圖 What will you do? 表示請示 Will you halp me to put these books in order? 表示習慣動作 She will sit for hours without saying a word. Would 與 used to Would 后只能接表示動作的動詞。 used to 則還可以接表示狀態(tài)的動詞。 Eg. He used to be a worker. 8 情態(tài)動詞用于否定、疑問句；條件從句中。 eg. 1. Dare you go here alone? 2. How dare you do such follish things? 3. I won’t allow you to swim in the river, even if you dare do it. Dare / dared 2 、做實意動詞后加不定式。 eg. I have never dared to tell him about it. 9 Need /needed 情態(tài)動詞用于否定句，疑問句。 實意動詞用法似 dare,用作不定式。 need + not + have + 表示“本來不需要做而做了。 10 Ought to 其否定式為 ought not to ought to + have + 表示本來應該做而沒有做到。 Eg. You ought not to have cut away the trees around the old building. 11 三點說明 情態(tài)動詞 + v 表示對 現(xiàn)在或將來 動作的猜測。 情態(tài)動詞 + have + 過去 動作的猜測。 情態(tài)動詞的過去式與原形相比，多點禮貌，少點冒昧， 語氣更為委婉。 情態(tài)動詞在一般疑問句中的回答： ① Can you sing? ② May I e in? ③ Must I handin the book now? ④ Need I finish it now? Yes, I can. No, I can’t. Yes, you may. No, you mustn’t. Yes, you must. No, needn’t /don’t have to. Yes, you must. No, you needn’t. 12 典型錯誤 1. He mustn’t be in the classroom. ( ) Can’t 2. You might leave the ba
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