I met my best friend Tom at the ststion yesterday.主语 谓语 定语 宾语 同位语 状语1、主语：是一句的主体，是全句诉说的对象，常用名词、数词或代词担任（是全句谈论的中心话题）。例：(1) Students syudy.（名词） (2)We are friends.（代词）(3)To go to good university is his first goal.（不定式）(4)Doing morning exercise is good for your health.（动名词）(5)Jane is good at playing the piano.(6)She went out in a hurry.(7)Four plus four is eight.(8)To see is to believe.(9)Smoking is bad for health.(10)The young
