hair什么情况加s?急用~2、加s后需要变动be动词吗?3、他有又短又白的头发.翻译应该是He has short white hair.还是He has short gray hair.4、选词填空His favorite food (is/are) (cakes/cake).(Cake/Cakes) (is/are) his favorite food.请说明为什么

问题描述:

hair什么情况加s?急用~
2、加s后需要变动be动词吗?
3、他有又短又白的头发.翻译应该是He has short white hair.还是He has short gray hair.
4、选词填空His favorite food (is/are) (cakes/cake).(Cake/Cakes) (is/are) his favorite food.请说明为什么