问题描述: Shall I tell Tom about it?No,you__.I've told him already.A,shouldn't B,needn't为什么? 1个回答 分类:英语 2014-11-04 问题解答: 我来补答 BI've told him already.我已经告诉Tom了.说明你没有必要再告诉Tom.所以用needn't没有必要shouldn't不应该(不和题意) 展开全文阅读