请教英语高手，翻译一下！谢谢你们！

中文都说不好

The good student maybe not costs more time on studying than other schoolmate who get low marks.

Students who get good marks do not necessirily spend more time than those who donot on study.

The excellent students may not be spending more time than the commom students.

其实汉英翻译起来是非常多的说法得.选择一种自已认为最顺的就行

Students who get high marks do not necessirily spend more time than those who didn't.

其实你可以把句子分成几个小部分，然后在补充一些成分，把句子补充完整
例如
成绩优秀的学生：Good students
成绩差的学生：Poor students
未必比： may not ...than
花费更多时间：spend more time
在学习上：in learning
Good students may not spent more time than poor students in learning。
不知道这个句子这么翻译对不对~~