keep-on和keep-up什么区别说下怎么用…举例说明

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keep-on和keep-up什么区别说下怎么用…举例说明keep-on和keep-up什么区别说下怎么用…举例说明keep-on和keep-up什么区别说下怎么用…举例说明keep(on)doing

keep-on和keep-up什么区别说下怎么用…举例说明
keep-on和keep-up什么区别
说下怎么用…举例说明

keep-on和keep-up什么区别说下怎么用…举例说明
keep (on)doing,keep up sth都是坚持:don't keep on asking silly questions.别老是问傻问题.when I stopped studying.I was still keen to keep up my English我不读书了还是很想坚持学英语