I feel a bit sick./我感觉有点儿恶心。

A: You don't look great. Are you Ok?

A: 你看起来气色不太好。你还好吗？

B: No, I feel a bit sick. Maybe it's something I ate.

B: 不好，我感觉有点儿恶心。可能是我吃的东西有问题。

A: Would you like a glass of water?

A: 你想喝水吗？

B: Yes, that would be good. Don't worry. I'll be OK.

B: 好的。不要担心，我会好的。

A: Take a seat and have a rest. I'll get you some water.

A: 坐下来休息一下。我去给你倒水。

B: Thanks. I'm sure I'll be OK.

B: 谢谢。我想我一定会的。

Notes 注释

1. If you want to say that you don't feel well, you can say I feel a bit sick. I don't feel too well.
如果你想说感觉不舒服，你可以这样说：I feel a bit sick. (我感觉有点儿恶心。) I don't feel too well. （我感觉不太好。）

2. You can offer things by using would, e.g. Would you like a glass of water?
你可以用would (愿意) 来主动提出给某人某物，例如：Would you like a glass of water? (你想喝杯水吗?)