I know there __ Niagara Falls and Rocky Mountains in Canada.“——”上应填is 还是 are?
问题描述：
I know there __ Niagara Falls and Rocky Mountains in Canada.“——”上应填is 还是 are?
答
is Niagara Falls中的FALLS是指瀑布,而非复数.there be 句型中的be的单复数要按就近一致原则变换.所以应该是is.例如:There is a pen and two books on the desk.课桌上有一个钢笔和两本书.There are two books and a...