try on try for try out try out for try up 现在都归为"短语动词.(phrasal verb)它的构成有两种:(1)动词+副词虚助词(verb+adverbial particle)(2)动词+介词虚助词(verb+prepositional particle).
try on 是try it on .因后文对it未作说明.故on只能是adv.词
性,语法才对.