对不起，在英语中可以有多种表达方式，以下是一些常见的说法：

1. "Sorry"

2. "Excuse me"

3. "I'm sorry"

例如，当你想要表达歉意时，你可以说：

- "I'm sorry for being so careless." (对不起，我太不小心了。)

- "Excuse me, Sir Harry, could you please wait a moment?" (哈里爵士！对不起，请等一下！)

- "Sorry, what's your name again?" (对不起，再问一次，你叫什么名字？)

在其他情况下，你也可以说：

- "I want to say nothing but apologize." (我只想说对不起。)

- "I'm sorry, but it seems the other person's phone is broken." (对不起，对方的电话好像坏了。)

- "I'm sorry; I can't recall your name." (对不起，我想不起来你的名字了。)

如果你需要请求对方原谅你的遗忘，你可以说：

- "I'm sorry; I've forgotten your name."

- "I must apologize for the delay." (很抱歉让你久等了。)

当你需要短暂离开时：

- "Will you please excuse me for a moment?"

如果你无意中打断了别人：

- "Sorry, I don't mean to interrupt."

如果你意识到自己的无礼：

- "I was impolite and I do beg your pardon."

如果你想要表达真诚的歉意：

- "I didn't mean to startle you."

- "I'm sorry I blew up at you."

甚至在询问别人是否方便时：

- "Pardon me, are you finished, madam?"

每种表达方式都有其适用的场合，关键是要根据具体情况选择合适的用语。