《Language in use》Rules and suggestions PPT课件
《Language in use》Rules and suggestions PPT课件第4页

3.— Must I do the work now? — No, you _____ . You may do it later. A. can’t B. mustn’t C. needn’t D. shouldn’t 思路点拨:用must 引导的一般疑问句,其回答形式:肯定回答用must, 否定回答用needn’t。 4.You _____ get there by bus. A. don’t need B. needn’t to C. don’t need to D. need don’t to 思路点拨:need既可以用作情态动词,又可以用作行为动词,短语有need to do sth.和need doing sth. = need to be done。