你的句子中用need不对.因为need用作情态动词时,只能用作疑问句或否定句；作实义动词时,need后面需+to ..所以,还是用should 好.老师，你可以帮我详细讲解一下need的用法吗，我给金币的：）。谢谢哈！举例说明情态动词need用作情态动词时，只能用作疑问句或否定句——Need i do it now ?----No, you needn't He needn't return it today 实义动词needI need to see my uncle tomorrowYon don't need to see him todayHe needs to leave at once He doesn't need to leave now Does he need to leave now ?老师那在允许我问问我曾经看到这样的句子government neednot to forbid the tobaccoyou need cleaning your house第二句是实意动词的动名词形式吧government neednot to forbid the tobacco这句不对，need后加了not ，need是情态动词，后面怎么还有个to呢？应该去掉to you need cleaning your house也不对，应该是Your house needs cleaning =Your house needs to be cleaned