买东西用英语怎么说

"How to say 'buy something' in English?"

In English, you can say "buy something" using the verb "to buy" in present tense. If you want to specify what you are buying, you can add an object after the verb. For example:

"I will buy a new book." (I am going to purchase a new book.)

"Can I buy two cups of coffee, please?" (could I obtain two cups of coffee, if possible?)