1) Could I have a large size, please?

我想要件大点的。
2) I think I'll take oyster.

我想我要点牡蛎。
3) I would like some wine.

我想要一点酒。
4) I want to have some pudding.

我想要一点布丁。
5) I want some bananas, please.

我想要点儿香蕉。
6) I would like to order something to carry-out.

我想要点外卖菜。
参考词条