A:I am so sorry to bump into you. 撞了你,真是非常抱歉。
B:It doesn't matter at all. 一点也没关系。 A:It was most careless of me. 我真是非常粗心。
B:Don't let it worry you. 不要为此不安。 A:How clumsy fo me to step on your foot. 我真笨,踩了你脚。 B:It's O.K.. That can happen to the best of us. 没关系,谁都会发生这种事。 A:I'm awfully sorry I don't realize. 非常抱歉我没有注意。
B:That's perfectly all right. 完全没有关系。