[求助]大全680(补充no.54)

54.   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

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

这题答案是c,我排除了d,e不选,犹豫了a,b,c,结果选了b,因为我知道since要用完成式,可是c选项since 后面的不是一个完整的句子,没有动词,不是应该s+v+o+since+s+v…吗,还是我错了,请各位帮我解答一下,谢谢

是since前方的主句用完成时,since引导的从句有没有动词无关:

after 没有从过去延续至今的含义。

after前面的时态取决于after后面的时间概念是过去，现在，还是将来.

我認為這裡應該是當介詞用的since,所以不用接S+V.

since表自從可當prep或conj.