try on

try on, try out

这是一对try+副词组成的词组。
try on: 指“试穿（衣服、鞋子）”及“试戴（帽子）”等，其中的on为副词，当宾语是代词时，该宾语要放在on之前；如果宾语是名词，该宾语放在on之前或之后均可。

• try on a coat＝try a coat on
  试穿衣服
• the new hat is for you．please try it on.
  这新帽子是给你的，请试试看。

try out: 指“试验或试用”某种机器、理论或方法，其中的out为副词，当宾语是代词时，try out要分开用。

• we tried out this new crop on a large area last year.
  去年我们大面积试种这种新庄稼。
• i'll try it out and see if it works.
  我来试试看能否行得通。

名词 try on:

1. putting clothes on to see whether they fit
   同义词：fitting, try-on, trying on

动词 try on:

1. put on a garment in order to see whether it fits and looks nice
   同义词：try

1. Try on the shoes before you buy them.
   买鞋要先穿上试试再买。
2. May I try on this sweater?
   我可以试穿这件毛衣吗？
3. The clerk held out a dress for Martha to try on.
   店员拿出一件衣服给玛莎试穿。
4. Be careful when you try on the dress it's only pinned.
   试穿这件连衣裙要小心--只是用针别住的。