Both shirts look nice on me.中的on是何种用法?我想找张纸写写是用write down 还是

Both shirts look nice on me.中的on是何种用法?我想找张纸写写是用write down 还是 I can't decide to buy which.They both look nice [on] me.为什么用 write down怎么用,是write sth down,还是write down sth I need a piece of paper to write on中的to write on是做状语还是定语? on 的反义词是down还是below 是write on a paper还是write in a paper? 请问是write in the card 还是 write on the card 而且picture和card用法好像 look down on的反义词是什么?是look high on吗? Now （write） down your names on this piece of paper 用write还是w please,sit down中的down是介词还是副词?为什么会出现sit down on one of these write.down; write.on; write.in look down on