Listen to the whole passage
Listen to the whole passage once first, then practice sentence by sentence.
The first line is the other person opening the conversation; the "You" lines are suggestions for you to practice saying in this scenario (not a back-and-forth dialogue).
A vendor at the market
你好，你要买什么？
Hello, what would you like to buy?
You
你好，我要买水果和菜。
Hello, I'd like to buy fruit and vegetables.
You
苹果多少钱？
How much are the apples?
You
菜多少钱？
How much are the vegetables?
You
我要三个苹果。
I'll take three apples.
You
我也要一点菜。
I'll take some vegetables too.
You
给你钱。
Here's the money.
You
谢谢你，再见！
Thank you, goodbye!