Do's

Be polite and friendly.                                                                     
Make your own bed（整理好床铺）. 
Wash your own plates and cups. 
Maintain （保持） cleanliness and personal hygiene （卫生） 
Put things back after using them. 
Help around the house. 
Save water and electricity. 
Observe table manners. 
Be punctual （准时） at all times. 
Ask when in doubt.
Be mindful of traffic and personal safety.

                            Don'ts

Don't criticize or mock（嘲笑） what you observe. 
Don't spit（吐痰） on the street.
Don't spout（高谈阔论） vulgarities（粗俗的） or act obnoxiously（可憎的）. 
Don't bring cellphones to school. 
Don't bring expensive equipment on the trip. 
Don't leave your belongings（亲属） unattended（无人照管的）.