再问GWD-17-20没有讨论到的细节，谢谢

phylicia

20 GWD17-Q20:

Construction of the Roman Colosseum, which was officially known as the Flavian Amphitheater, began in A.D. 69, during the reign of Vespasian, was completed a decade later, during the reign of Titus, who opened the Colosseum with a one-hundred-day cycle of religious pageants, gladiatorial games, and spectacles.

 

1. which was officially known as the Flavian Amphitheater, began in A.D. 69, during the reign of Vespasian,
2. officially known as the Flavian Amphitheater, begun in A.D. 69, during the reign of Vespasian, and
3. which was officially known as the Flavian Amphitheater, began in A.D. 69, during the reign of Vespasian, and
4. officially known as the Flavian Amphitheater and begun in A.D. 69, during the reign of Vespasian it
5. officially known as the Flavian Amphitheater, which was begun in A.D. 69, during the reign of Vespasian, and

想请教A为什么不对，从“which。。。Vespasian”都是插入语，was是整个句子的谓语。这样理解可以吗？谢谢

wei_wangyan

不可以那样理解，因为began也是谓语，和was completed并列，中间需要有连词的。

Construction of the Roman Colosseum,... began... and was completed...

phylicia

谢谢,我明白了

Friskies

以下是引用wei_wangyan在2007-4-10 13:33:00的发言：

不可以那样理解，因为began也是谓语，和was completed并列，中间需要有连词的。

Construction of the Roman Colosseum,... began... and was completed...

小声问一下，为什么construction的谓语可以同时用主动形式（began)和被动形式（was completed）？

eric4music

附带说一句，也没有更好的选项