there are a pair of trousers.请问用is还是are?
问题描述：
there are a pair of trousers.请问用is还是are?
1、There are a pair of trousers.请问用 is 还是 are?2、This is a pair of trousers.请问用 is 还是 are?3、This is a truly enlightened world .用 a还是 an?
答
1.is 因为 a pair of 使用单数,所以用 is.2.is 因为 a pair of 使用单数,所以用 is.3.a 因为 truly 是以辅音开头,所以用 a.