she‘s a good student and is always the best in the class in her studies中的studies 为甚么要复数啊?是三单的缘故吗?可是学

题目

she‘s a good student and is always the best in the class in her studies中的studies 为甚么要复数啊?是三单的缘故吗?可是学习是动词吗?那“always“为什么加s
she often helps me with my studies.中的学习也是三单吗?
（ps：再问一个问题哦,sports、favourite subjects又什么时候是用复数啊?

答案

两个 studies 都不是动词,而是名词
always是一个单词“一直,总是”
sport 运动,sports运动会
subject 科目是单数名词,只有超过一个就+s