大全680，since 和 after的区别

jeremy2000

1.        Tenor George Shirley sang more than 20 leading roles at the Metropolitan Opera since having his debut there as Fernando in Cosifan tulle on October 24, 1961.

(A) sang more than 20 leading roles at the Metropolitan Opera since having

(B) sang more than 20 leading roles at the Metropolitan Opera since having had

(C) has sung more than 20 leading roles at the Metropolitan Opera since

(D) has sung more than 20 leading roles at the Metropolitan Opera after（C）

(E) has sung more than 20 leading roles at the Metropolitan Opera subsequently to

D为什么错

dreadpower

   

    since: at a time in the past after or later than  *has held two jobs since he graduated*  

            : from the time in the past when  *ever since I was a child*

    after: subsequently to the time when  *we will come after we make plans*

    这个区别我问过，楼主用关键字搜索就可找到

     http://forum.chasedream.com/dispbbs.asp?BoardID=23&ID=30530