一般过去时（规则动词） (A1)

大部分动词表示过去时都加 -ed。所有人都一样。

加 -ed（人人都一样）

• I worked yesterday.
• She played tennis.
• They watched a film.
• Not "She plays tennis yesterday." — say "She played tennis yesterday.". -ed 就是把动作变成过去的标志。
• 试一试: Yesterday they ___ a film at the playhouse. (watched / watch / watchs) 答案: watched — "Yesterday" 告诉你这是过去，所以加 -ed：watched。动词原形 "watch" 是现在时。

以 -e 结尾：加 -d

看看这个规律：like → liked · live → lived · close → closed。如果动词以 e 结尾，只加 -d 就行。

• like → liked
• live → lived
• close → closed
• 试一试: Amina ___ in Senfarrow Brook last year. (lived / liveed / live) 答案: lived — "Live" 已经以 e 结尾，所以只加 -d：lived（不是两个 e 的 "liveed"）。

y → ied

看看这个规律：study → studied · try → tried · carry → carried。y 变成 ied。但如果 y 前面是 a, e, i, o, 或 u，就保留 y，直接加 -ed 就行：play → played。

• study → studied
• try → tried
• but: play → played (an a before the y)
• 试一试: Farid ___ hard for the test. (studied / studyed / studyd) 答案: studied — 很接近了，y 要变化：study → studied（不是 "studyed"）。

双写最后一个字母

看这个规律：stop → stopped · plan → planned · shop → shopped。这些都是只有一拍的短词，最后一个字母紧跟在单独一个 a, e, i, o, 或 u 后面。把最后那个字母写两遍，再加 -ed。

• stop → stopped
• plan → planned
• shop → shopped
• 试一试: The bus ___ near Ghafwick Station. (stopped / stoped / stopd) 答案: stopped — 差一点。"stop" 里最后一个字母紧跟在单独一个 o 后面，所以 p 要写两遍：stop → stopped（不是 "stoped"）。

什么时候不双写

大多数词不双写。如果 -ed 前面有两个字母，或者这个词读起来不止一拍，直接加 -ed 就行：work → worked · wait → waited · visit → visited。

• work → worked (r and k before the -ed)
• wait → waited (a and i before the -ed)
• visit → visited (a longer word)
• 试一试: Last summer Dana ___ at the Brindlemoor market. (worked / workked / work) 答案: worked — "work" 的 -ed 前面有两个字母（r 和 k），所以不双写。直接加 -ed：worked（不是 "workked"）。
• 试一试: Remember what follows didn't, They ___ the film. (didn't watch / didn't watched / didn't watches) 答案: didn't watch — did 或 didn't 后面永远接动词原形：didn't watch。（过去的意思已经由 didn't 表达了。）