I would advise you to be wary of Kevin; he's been gunning for you since you stole his girlfriend.
我想劝告你提防克文，自从你抢走了他的女朋友以来，他一直在寻找机会报复你。
Kevin is so sick that he can't come to class. (=Kevin is too sick to come to class.)
克文病得严重以致无法来上课。
Kevin is Ray's side- kick.
凯文是雷的铁哥们。
