句型③是虚拟语气，表达一种设想。当问题为would you like to…时，建议使用该句型。另外，还可以在无话可说时用来应急。套用句型：
If I had the chance, I would like to travel to California and visit my best friend who I haven’t seen for ages.
If I had the chance, I would like to ask Yaoming to autograph my basketball.
句型④是在分情况讨论问题时必备句型，也是丰富回答内容的经典招数。套用实例：
Q: What do you usually do at weekends?
A: Well, it’s hard to say. I mean, if I am with friends, then it’s quite possible that we will go window shopping or traveling around. But if I am alone, it’s more likely that I will just stay at home and do some washing and cleaning.
当然，以上两种情境还可以变换成多种可能，如按天气状况分为If it is good weather, 和If it is bad weather; 按时间多少分为If I’ve got a lot of time，和If I am fairly busy; 等等。
综上，三大英语从句在口语中的适量使用可以起到意想不到的效果，既在语法这一评分标准上赢得了优势，又可以帮助摆 脱考场上无话可说的尴尬。只要肯花功夫和时间记忆以上一些经典句型并加以巩固练习，相信必定会在雅思口语单项方面有所提高。