现在/过去完成时的用法和标志?现在完成进行时的用法?

一般过去时:eg:the tape recorder was out of order last week. we had it repaired the day before yesterday. it has been in good condition ever since. 现在完成时my friend Mary said that he would come to my birthday party tonight, but he hasn't come so far. 现在完成进行时i haven't seen Diana these days; i am afraid she hasn't been feeling herself. i have been reading the book these days and i can finish reading it within two days