一道英语选择题

显示全部楼层 · 2008-10-1 12:04:23

Mike bottles beed cleaning throughly before they aer used again,＿ they?
A. don'tB. mustn'tC. didn'tD. aren't
问题打错了，是Milk bottles need cleaning throughly before they are used again,＿ they?
A. don't B. mustn't C. needn't D. aren't
希望能说明理由

千问 · 2008-10-1 12:04:23

答案应该为ANeed 此处为实义动词,意为需要牛奶瓶在使用前必须要彻底地清洗,不是么?此处的Tag question即反意疑问句则可视为对实义动词NEED提问故答案为A...

千问 · 2008-10-1 12:04:23

选B。need的反义疑问句需用 mustn't ，选B。...

千问 · 2008-10-1 12:04:23

后面的反义疑问句应该根据主句的动词need来决定.need后面跟了动名词做宾语,所以在这里是实义动词而非情态动词,所以选A.另外我想纠正下楼下几位的说法,NEED在这里不是情态动词....

千问 · 2008-10-1 12:04:23

C,主句的动词是beed，是个过去时，这里是反意疑问句，就用过去时的否定式，所以选C...

千问 · 2008-10-1 12:04:23

B,need的反义疑问句需用 mustn't...