1.希腊以它的历史著名.（要用到be famous for这个短语）
Greece is famous for its history.
2.当我再大自然中,我就会忘记所有烦恼.（be in the nature）
When I am in the nature again,I will forget all the sorrows.
3.昨天当我洗完衣服,已经是下午三点了.（finish doing）
When I finished washing clothes yesterday,it was already 3 o'clock in the afternoon.