别在公共场合大声喧哗
Do not make loud noises in public.
1别在上课时说话
Do not talk during the lessons.
2我们不能上课迟到
We cannot be late coming to class.
We should come to class on time.
3别在街上踢足球
Do not play soccer on the street.
4别在教室里玩篮球
Do not play basketball in the classroom.
5别撒谎
Do not lie.
6你不能太晚睡觉
You should go to sleep earlier.
7她不能唱歌,因为她太害羞
She is too shy to performance her singing in the public.
8他不能来上课,因为他生病了
He cannot come to school because he is sick.
9我不能完成家庭作业,因为我头疼.
I cannot (I am unable to) finish my homework on time because I have a headache.