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【正文】 mustn’t B 2. Where is Emma? I can’t say for sure where she is, but she___ be out shopping. A. can B. should C. must D. may D 3. The room is in a terrible mess。 must用于一般問句中 ,肯定回答用 must否定 回答 用 needn’t或 don’t have to, — Must I finish all assignments at a time? — Yes, you must. No, you needn39。 I shall go at once. (表 “決心”,情態(tài)動(dòng)詞) (構(gòu)成一般將來時(shí) , 助動(dòng)詞) (表 “決心”,情態(tài)動(dòng)詞) Shall we go by train, Mom? Shall he e to see you? ,第三人稱疑問句中, 征求對(duì)方意見 You shall fail if you don’t take his advice. Persons under 18 shall not be employed in night work. 二、三人稱 , 表示說話人的 意圖 、 允諾 、 警告 、 命令 、 決心 等“必須 ,應(yīng) ,可” 4. eg: You should keep your promise. She should have passed the exam. You shouldn’t have told her about it. should表示義務(wù) /建議 /勸告,意為 “應(yīng)該”。 2. _____________________________________ If you want help, let me know, will you? 如果你需要幫助 , 讓我知道 , 好嗎 ? Will you type this, please? 請(qǐng)打印這個(gè),好嗎? Won39。 . The man still was able to get to the village though there was so much trouble. E. _____________: eg. Can the news be true? It can’t be true. 表示推測(cè)可能性 只用于疑問句和 否定句 2) could的主要用法是: A. ______________________________ ____________________: eg. We all knew that the young man couldn’t be a doctor. could 是 can的過去式 , 表示過去 的能力和推測(cè) B. could可代替 can表示請(qǐng)求 , 語氣委婉 eg. Could I use your bike? Yes, you can. C. _____________
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