Too many extracurricular activities will interfere with your studies.
过多的课外活动会妨碍你的学业。
interfere有干扰和妨碍的意思，如果表示妨碍某事可用interfere with something这个词组；如果表示干涉某事，则用interfere in something。
Any country is not allowed to interfere in our country's internal affairs.
任何国家都不允许干涉我国的内政。
编辑:蒋健棠-----