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标题: 大全680 [打印本页]

作者: lololo 时间: 2004-9-1 20:33 标题: 大全680

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

(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

我的问题

为什么不对,after也可以引导一个时间点,主句用完成时.

作者: himba 时间: 2004-9-1 20:35

完成时态要用since 的

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