不要看have,就看been和done.be后面肯定是形容词或者介词短语什么的.done就是do.完成时态一定是过去的,关键看动词是否是可持续的动词.我在别的地方看到了怎么一个句子He said he had never been to tibet这个为什么可以直接加TO啊。She has been working long hours for the past few weeks.Been后面接的是动词啊 我懂得太少了我从别的地方看到这样一个句子He said he had never been to tibet 这里为什么可以接TO啊。She has been working long hours for the past few weeks.这个后面接的WORK是动词啊 抱歉 我懂得太少了