英语翻译here are some american classroom customs:*if the teacher

英语翻译
here are some american classroom customs:
*if the teacher asks a question,you are expected to give an answer.if you do not understand the question,you should put up your hand and ask the teacher to repeat the question.if you do not know the answer,it is all right to tell the teacher that you do not know.then he or she knows what you need to learn.
*there is no excuse for not doing your homework.if you are absent（缺席）,you should call your teacher or someone who is in your class and ask for the assignment（作业）.it is your responsibility（责任）to find out what assignments you have missed.it is not the teacher’s responsibility to remind you of missed assignments.
*you must not be absent on a test day.if you are seriously ill,call and let the teacher know you will not be there for the test.if your teacher allows make-up tests,you should take the test within one or two days after returning to class.serious illness is the only reason for missing a test.
*be on time!it is considered（认为）rude to be late.also,it disturbs other students.if you must come in late,be sure to do it quietly.have your books and papers out of your bag before you come into the room.then go to your seat and sit quietly.in the u.s.it is not necessary to knock before you enter the classroom.if you must leave during class,do so quietly.there is no need to ask the teacher’s permission.entering a teacher’s office or any office with a closed door without knocking first is not acceptable.knock first,then wait to be invited in.
*wearing a hat in class is considered impolite by many teachers.some teachers may ignore it,but you should ask permission first.

这里有些美国课堂的习惯：
如果老师问你问题,你要回答；如果你没听懂那个问题,你应该举手让老师再重复一遍那问题.如果你不知道答案,你完全可以告诉老师你不知道.然后他/她才知道你要学什么.
不做功课不能找任何借口,如果你当时缺席,你应该致电给你的老师,或者问当时在教室的同学.你有责任找出你哪些作业错过了,而不是老师的责任提醒你要写作业.
你不准在考试的那天缺席.如果你病得很严重,应打电话告诉老师你那天来不了考试了.如果老师允许你补考,你应该在回来后的一到两天内补考完.病重是唯一一个可以缺考的理由.
要准时!迟到会被认为是很粗鲁的行为.而且,这影响了其他同学.如果你迟到一定要进来,那么就要轻声一点,并且把你的书在进教室前拿出来,然后再进去坐下.在美国,进教室没必要敲门.如果你必须离开教室,要轻声一点,没有必要先和老师请示.进入老师的办公室或其他办公室不敲门是不可以接受的.要先敲门,再等着别人允许才能进去.
在上课的时候戴帽子是对老师很不礼貌的.尽管有些老师可能不在意,但你应该先获得允许.