英语中什么时候要加s

Question

英语中什么时候要加s

Answer 1

1.一般现在时中,主语为单数第三人称（he,she,it,表第三人称的名词）时,谓语动词不是be动词、没有情态动词及助动词,而是实义动词(有实际意义)要加s.
He has a brother.
She eats an apple every morning.
My father usually walks to his office.
2.大多数名词变复数时加s,boys,lakes.少数加es,potatoes.还有部分不规则变化sheep,deer.