How old are/is your father?is 还是 are?
问题描述:
How old are/is your father?
is 还是 are?
答
is
your father是第三人称单数
答
is.
因为father是一个第三人称单数,所以是is.
答
is
第三人称单数
答
is
因为your father是第三人称单数