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help me, please? B: ___________! A: I want to ________these boxes to my home Let’s ______ the boxes _____ the car now. B: _______right. A: Oh, the box ___ heavy. Can you carry it? B: Yes, I______ A: ________you _____ it to my room? B: Certainly. 完成對話 Certainly take put in All is can Could take can。 (客觀上需要做這件事 ) He said that they must work hard. 他說他們必須努力工作。 A: Could I have the television on? B: Yes, you can. / No, you can’t. 2. 在否定、疑問句中表示推測或懷疑用couldn’t。 3. 情態(tài)動詞沒有人稱,數(shù)的變化,即情態(tài)動詞第三人稱單數(shù)不加 s。 3) 情態(tài)動詞的“時態(tài)”形式并不是時間區(qū)別的主要標(biāo)志 , 不少情況下 , 情態(tài)動詞的現(xiàn)在式形式和過去式形式都可用來表示現(xiàn)在時間、過去時間和將來時間。 如: Can you understand the different kinds of English these people are using? Two years later, he was able to speak very good Chinese. 2) could的主要用法是: A. could 是 can的過去式 , 表示與過去 有關(guān)的能力和推測 : . We all knew that the young man couldn’t be a doctor. B. could可以代替 can表示請求 , 但語氣較 can客氣、委婉 : . Could you lend me your dictionary? Could I use your bike? 3) can和 could接動詞的完成形式,表示可能已經(jīng)做某事。二者都可用于表示請求 , 但是用法稍有不同。 表示沒有把握的推測 。 He had to look after his sister yesterday. 3. 在否定結(jié)構(gòu)中 : don’t have to 表示 “不必” , mustn’t 表示“禁止”。請用下面的提示詞給 Jimmy寫份留言。t I cut my finger and I’m trying not to get it wet. 1— d 2a 3c 4e 5b 4b Fill in the blanks in the conversation A: I hate to_________ chores. B: Well,