01. “我明天有事”英文怎么说？

①

I'll be busy tomorrow.

例：

I'd love to, but I'm afraid I'll be busy all day long tomorrow.

我很想去，但是恐怕明天一整天我都有事要忙。

②

I have plans for tomorrow.

have plans “有安排，有事”

例：

"I'm sorry," she said. "I have plans for tomorrow."

“抱歉，”她说，“我明天有事。”

③

I'll be tied-up tomorrow.

tied-up 很忙；脱不开身

例：

I can't see you tomorrow. I'll be tied-up all day.

我明天不能去见你，明天一整天我都很忙。

02. “手头有很多事情要做”英文怎么说？

"手头有很多事要做" 可以说：

“I have a lot of things to do.”

另外有一个更口语化的表达：

"have（get） one's hands full "

指非常忙，手头有很多事要做

例：

He can't help today because he has his hands full.

他今天帮不了忙，因为他手头有很多事要做。

Could I talk to you later? I've got my hands full right now.

我能晚点跟你说吗？我现在手头有好多事儿。

03. I have a thing for you

别人对你说 "I have a thing for you"

不要以为是“有东西要给你”

而是他/她对你“有好感；有点意思”

例：

He has a thing for you.

他对你有点意思。

They have a thing for each other.

他们之间有点感觉。

04. It's my thing

"It's my thing" 的意思是：

我擅长的；我的兴趣爱好

例：

Painting is my thing.

画画是我擅长的事。

That's his/her thing.

那是他/她的强项。

05. a whole thing

"a whole thing" 不是“一整件事情”

而是指容易引起争议的“复杂的情况”

例：

A: I forgot to invite Penny to the wedding, and now it's a whole thing.

我忘记邀请Penny来参加婚礼了，现在情况变得复杂了起来。

B: Oh man. Is she mad at you?

天啊，那她生你的气了吗？