2017年中考英語時(shí)態(tài)知識(shí)點(diǎn)：一般過去時(shí)三種句型形式

一般過去時(shí)三種句型形式
    肯定形式：
    主語+動(dòng)詞過去式+其他
    例句：She often came to help us in those days.
    否定形式：
    ①was/were+not;②在行為動(dòng)詞前加didn't，同時(shí)還原行為動(dòng)詞
    例句：I didn't know you are so busy.
    一般疑問句：
    ①Did+主語+do+其他? ②Was\Were+主語+ do sth?
    例句：Did I do that?