a good manners guide to your dorm room peaceful为什么前面a后面manne

a good manners guide to your dorm room peaceful为什么前面a后面manne A World Guide to Good Manners 这篇英语文章的中文翻译 It is good manners to put up your hands before you answer a it is good manners to wait in line.既然是is 后面为什么是manners （mann I think it bad manners to smoke in a reading room.为什么不用it's, 这里为什么用good manners 而不用a good manner? 英语作文To be a student with good manners a guide to what's your adventage to be a tour guide? what would you like to change about your dorm room?What woul a great deal of good manners —Is your neighbor Mr.King a man with good manners?—I don’t t