1 They fought for national independence.　　他们为民族独立而战.2 This letter is for you.　　这是你的信.3 We must start early,for it will take two hours to drive to the airport.　　我们得早点动身,因为...有没有简单一点的呢？你说一下哪个不简单。就是还需要我重新添几个This is for you 这是给你的This is for real 这是为现实存在的It is time for class 该上课了It is time for school 该上学了It is good for us 对我们来说是好的、有益的Please wait for me 等我一下Thanks a lot