ALL THEY HAVE IS CARS 还是ARE?

ARE
ALL THEY HAVE IS CARS =CARS are ALL THEY HAVE.

和楼上答案一样！
All they have are cars.
解析：
英语中有一种说法叫“就近原则”即：
谓语动词的单复形式，要看和它最近的名词的单复。
若最近的单词是单数，谓语动词用单数。
本题中，cars 是复数，因此谓语动词用复数are.
另外，此句为倒装句，做题想容易些，把此句变为正常句式：Cars are all they have.同样遵循”就近原则”

例如：There is an apple and a orange on the table.
there are apples and a orange on the table.

当然是看后面的！！变成正常句后的！！看离去谓语动词最近的名词！！