howmuchisit和howmucharethey的区别是东西是单数还是复数。

相关介绍

how much is it和how much are they都是问一件东西价格的意思，两者区别就是东西是单数还是复数，问单数东西的价格是用how much is it，问复数东西的价格是用how much are they。