it is impossible to decide whether or not you like something until you have tried it. 求改同一句

问题描述:

it is impossible to decide whether or not you like something until you have tried it. 求改同一句
怎么把这句话翻译成:You _____ decide whether or not you like something ____you have tired it .可以的话解释一下为什么这样填可以么?

You can decide whether or not you like something when you have tired it.
上面一句的意思是说,你没有尝试过,就不能决定你是否喜欢
下面一句可以改成,当你尝试过,你能决定是否喜欢.