有同学问how many后面跟单数还是复数？【答】how many后面跟复数。
how many+ 可数名词复数形式
How many books do you have?
How many children are playing in the park?
How many cats are in the shop?
How many cars are blue?
How many apples are put in the fridge?
所以，请一定要记住how many后面跟复数名词。同时须搞懂的知识：how many how much区别