这段英文哪些地方该重读The middle school students in china usually obey

这段英文哪些地方该重读
The middle school students in china usually obey rules while canadian students are more than open-minded and free.
chinese students tend to depend on their parents,which is different from cacadian students,who are eager to be independent.
chinese students are so hand working that they spend much time on homework.
however,canadian students have little homework and love exploring.
compared with chinese students,who have a clear aim about future,canadian students think it most important to enjoy the present.