the ways in which they go to school are different.先找出句子主干，就是”方式不同”，在添上修饰方式的“他们去学校的”作为定语，就行啦。
the ways they go to school are different他们上学的方式不同
They go to school in different ways。。。我不知道你这是英式还是法式的英语
