1. Once the economic and social usefulness of the motor car was demonstrated and with its superiority to the horse being proved, much of the early hostility to it in rural regions disappeared.
a. and with its superiority to the horse being
b.and its superiority over the horse had been
c.and its superiority to the horse
d.its superiority over the horse
e.with its superiority to the horse having been
白勇认为是B,说C不对的原因是 and边接once 从句和名词短语its superiority两者形式不对称
我觉得他的说法有问题,原因:
1.C答案也是一个从句,动词是proved
2.根据be动词省略规则,如果两个be动词都是助动词,后面一个可以省略,所以实际上是:once xxx was demonstrated and xxx was proved, much of xxx.
3.b改用过去完成时态,在once这条件句中好像没这种玩法吧,所以B是错的。 |