根据题目要求完成下列任务，用中文作答。
下面是某教授的课堂教学片断。
T: …Now, let’s make our own wishes with “if only”. But please don’t forget to give a description, even though it’s very brief, of situation, the context, where you make the wish with one or two sentences… how about Liz?
Liz: Now it’s 5 o’clock, and there is a traffic jam on the express way. The hotel will cancel our room at 6 0’clock if we do not get to the hotel. Then, I’ll say: oh, I wish if only I didn’t go on the journey.
T: Listen, Liz. You see, once you use “I wish”, you don’t need to use “if only”, Just use either one.
Liz: Yes.
T: So will you try again? Just the wish.
Liz; If only I didn’t go on the journey.
T: To make it better, you can say “if only hadn’t gone on this journey”, because you are already on the way. Go on, please.
