Simone
区别是go on a trip 表示旅行还没开始，打算去旅行。go for a trip 表示旅行已经开始了，正在旅扮改弯行中。例句：go on a trip 1、May I go on a trip to Beijing? 我可以去北京旅行吗？2、Why don't we go on a trip to the Sun Island? 我们为他们将会去北京旅行。go for a trip 1、He is on a business trip and is suppose to be back this morning. 他现在出差去了，预计今天早上会回来。2、Thierry Herzog said the former president wasn't present when police arrived because he is on a trip to Canada for family reasons. 埃尔佐格说，由于萨科奇因处理家庭事务已经前往加厅闷拿大，警察抵达时萨科歼升奇并不在场。什么不去太阳岛旅行呢？
