用are,因为指代的是两个人.
不行换过来你就明白了,my mother and father are over there.但是有人说用“there be”的就近原则，应该用“is”?就近原则：There is a pen, two books and many pencils on the desk这是三个主体，有单数也有复数，就近选最近的。My father and mother是一个复数的主体。 所以如果是there is my father and my mother 就可以。因为你父母是独立出来的分成两部分说了