现在完成时后面是接什么时态啊
在这句话中As you have already seen in Section A of this application,i have a good academic record,have already后面是接的过去分词,为什么在有些后面是接的过去时呢,比如这句话I have not travelled abroad much yet.到底现在完成时后面的句子成分应该是怎样的呢