There be句型 主语是there,不能对there提问
如果你要提问There be后面的名词,
比如There is an apple on the table.我们可以用what is there on the table
There are three apples on the table.对three 提问 就是 How many apples are there on the table?我问的有点歧义 我是想问be 只能用is 吗be 后面名词是单数 用is/was/has been 复数 are /were/ have been