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).
The leader of the volunteer group
你好，你想来做什么？
Hello, what would you like to come and do?
You
我想来帮你们做事。
I'd like to come help you do things.
You
我能做什么？
What can I do?
You
我上午能来。
I can come in the morning.
You
我和谁一起做？
Who do I work with?
You
几点来好？
What time should I come?
You
我很想帮老师和学生。
I really want to help the teachers and students.
You
明天我也能来。
I can come tomorrow too.
You
能帮你们，我很高兴。
I'm happy to be able to help you.