he works hard .he wants to pass his exams .为什么works wants后面要用S 什么情况下要用S
问题描述:
he works hard .he wants to pass his exams .为什么works wants后面要用S 什么情况下要用S
答
在一般现在时中,主语为第三人称(he,she等)单数时,谓语动词采用相应的第三人称变化,即加s.