一:asks ,helps ,jumps ,likes ,makes ,comes ,buys ,has ,studies ,flies ,plays .二:am / is - was ,are - were ,do - did ,enjoy- enjoyed ,type - typed ,copy - copied ,rip - ripped ,cook - cooked ,stop - s...
（一）写出下列动词的第三人称单数形式
一:asks ,helps ,jumps ,likes ,makes ,comes ,buys ,has ,studies ,flies ,plays .二:am / is - was ,are - were ,do - did ,enjoy- enjoyed ,type - typed ,copy - copied ,rip - ripped ,cook - cooked ,stop - s...