英语翻译运用完成时态.自从那位新学生来到我们学校,我还没见过她.TOM上周考试不及格,打那以后,他一直不开心.到现在为止,他已经卖掉了10条裤子并买了五本书.他们已经离开两个小时了.上个月底为止,我冰箱里就没有什么鸡肉了,因为我们没有买.上周三下雪的,白色的世界真漂亮.自那以后,校园里已经有了十二个大雪人.

I haven't met her since the new student come to our school.
Tom failed the exam last week. Since then, he has been unhappy.
So far, he has sold 10 pairs of pants and bought 5 books.
They have been gone for two hours.
Up until the end of last month, there hadn't been any chicken in my fridge, because we didn't buy any.
It snowed last Wednesday. The world is so beautiful being white. Since then, there has been 12 big snowmen in the school.