英语 急急急 ---过去式

I am ok
I was ok

He is fine
He was fine

一个道理

I was ok.

加什么ed啊，这里的动词是be动词am，它的过去式是was。小朋友，好好看看英语基本语法吧。

还是给你个详细的链接吧：http://baike.baidu.com/view/901109.htm

Irregular Verbs 不规则动词形式变化表 附：所适用时态&变化规则
Chinese Means 中文意思 Infinitive 原型 Past Simple 过去式 Past Participle 过去分词 Chinese Means 中文意思 Infinitive 原型 Past Simple 过去式 Past Participle 过去分词
吃 eat ate eaten 使得，让 let let let
be动词，是 be/am/is(are) was(were) been 失败，丢失 lose lost lost
成为 become became become 做，让（什么什么如何） make made made
开始 begin began begun 会见，遇见 meet met met
折断，弄坏 break broke broken 支付 pay paid paid
带来 bring brought brought 放置 put put put
建造 build built built 阅读 read read read
购买 buy bought bought 响 ring rang rung
助动词，可以 can could 奔跑 run ran run
接住 catch caught caught 说 say said said
来，去 come came come 看见