"我昨天看电视"写成 I watch TV yesterday，老师就圈起来。过去式规则动词加 ed，四条规则讲透。
规则一：一般直接加 ed
- watch → watched
- play → played
- clean → cleaned
读音：清辅音后读 /t/，浊辅音和元音后读 /d/，/t/ /d/ 后读 /ɪd/。
规则二：e 结尾只加 d
- live → lived
- like → liked
- use → used
规则三：辅音 + y，y 变 i 加 ed
- study → studied
- cry → cried
- try → tried
- play → played（前面是元音 a，不变 y）
规则四：重读闭音节双写尾字母
- stop → stopped
- plan → planned
- shop → shopped
- drop → dropped
判断：短元音 + 一个辅音结尾，且最后一个音节重读，双写。
高频例词过一遍
- walk → walked
- talk → talked
- look → looked
- listen → listened
- want → wanted
- need → needed
否定和疑问
过去时请 did，动词打回原形：
- Did you watch?（不是 Did you watched）
- I didn't watch.
口诀：一般加 ed，e 后只加 d；辅音 y 变 ied，重读双写再补 ed。
