unlike /ˈʌnˈlaik/ I. adj. 不相似的，不同的：The two cases are quite unlike. 这两种情况完全不同。I never saw twins who were so unlike. 我从未见过那么一点都不像的双生子。‖II. prep.不像…，和…不同：The picture is quite unlike him. 这张照片一点不像他。She’s very unlike her mother. 她一点不像她母亲。［考句］Unlike his sister, Jack is quiet and does not easily make friends with others.杰克不像他姐姐，他很文静，不轻易和别人交朋友。
unlikely /ʌnˈlaikli/ adj. (［反］likely) 未必的，不大可靠的：He is unlikely to come. 他不可能来了。It is unlikely to rain. 不可能下雨。Snow seems unlikely today. 看样子今天不可能下雪。
