[求助]GWD-17-20 兼论and前逗号的使用

drift_er

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.

which was officially known as the Flavian Amphitheater, began in A.D. 69, during the reign of Vespasian,

officially known as the Flavian Amphitheater, begun in A.D. 69, during the reign of Vespasian, and

which was officially known as the Flavian Amphitheater, began in A.D. 69, during the reign of Vespasian, and

officially known as the Flavian Amphitheater and begun in A.D. 69, during the reign of Vespasian it

officially known as the Flavian Amphitheater, which was begun in A.D. 69, during the reign of Vespasian, and

key：c

希望讨论一下and前逗号的使用，我映象中and后如果有主语则要用逗号，如果与前面句子合用一个主语则不需要逗号，但是此题不是这样，请NN指教，and前逗号何时用何时不用？谢谢！

monkhunter1

你说的没有错，不过这里因为and 之前有插入语during the reign of Vespasian，逗号的作用是用来分割插入语，不是分割句子，如果把插入语去掉，插入语前后的逗号都可以去掉，这样你就明白了

drift_er

明白了。

seasnow

这题不选B是因为修饰歧义吗？

wycg

以下是引用seasnow在2006-2-2 14:24:00的发言：

这题不选B是因为修饰歧义吗？

对. B错在用了begun,修饰歧义