it seems that tom has changed a lot前面为什么用一般现在时
问题描述：
it seems that tom has changed a lot前面为什么用一般现在时
后面changed是过去时啊前面为什么用一般现在时
答
整个句子的时态是一般现在时,从句是现在完成时,现在完成时是建立在现在的,has,