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 So＇clock,and there is a traffic jam on the express way.The hotel will cancel our room at 6 0＇clock if we do nor 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.