I / we / you /they / My mother and I (妈妈和我,含义就是“我们”)/ Your classmates and you (你的同学们和你,含义是“你们”) / Jack and his parents (杰克和他爸爸妈妈,含义是“他们”)用play 。(就是说第一人称,第二人称,和第三人称复数用 play,再确切一点就是“我,我们,你,你们,他们”)。
he / she / it / Tom (他)/ Alice(她)/ The dog (那条狗,含义是“它”)用 plays (第三人称单数用plays,也就是说“他、她、它”用单数)。
进行时态用eating,就是说不管是谁,后面加了be动词,都要用eating. 但是,be 动词的形式不同。 即:I am playing. We / You / They are playing. He /She/ It is playing.