Tony said,"I didn't watch TV last night." 改为现在完成时
Tony said﹙that ﹚﹙he﹚﹙hadn't ﹚﹙watched﹚TV the night before.
分析:主句是一般过去时,从句要用相应的过去时( 这里是过去完成时)
加油!不明白再问!为什么要用hadn't ?不是didn't或haven't?根据你句子的要求:改为现在完成时,现大完成时的结构是have /has +动词的过去分词。而主句是一般过去时SAID,故从句要用相应的过去时,故用 hadn't