怎样用英语跟同学打招呼（第一次见到同学打招呼英语对话）

1.You should say "hello" to your classmates as soon as you see them.

2.You should go to your classmates if you have any problems,also you should have more communication with them.

3.You can invite your classmates if you have any parties at home.

4.You can go and ask your classmates when you see them talking with each other.

5.You should go and help him if your classmate has any difficulties.

hello hi good morning/afternoon/evening等。