所谓第三人称单数是指谓语根据人称而采取不同的用法当人称为she he it 等用第三人称单数 单数是根据名次的可数和不可数而定,名词为不可数时用单数,是可数时用复数
第2个回答 2020-03-20
1.What is it? What are they? 2.This is a cat。 They are cats。 3.What color is it? What color are they? 4.It is yellow。 They are yellow。 5.Is it yellow? Are they yellow? 6.Yes,it is。 Yes,they are。 7.No,it isn't Nothey aren't