Alan:
(In the library)What book are you looking for? 

你在找什么书?
Happy:
A book that teaches us how to learn Japanese. 

一本学日语的书。
Alan:
But you have said you're going to learn French not long ago. 

可你不久前才说你要学法语。
Happy:
I'm so interested in foreign languages,but I don't know which I ought to learn first. 

我对外语特感兴趣,但我不知道该先学哪个。
Alan:
You'd better learn English well first,I think. 

我看你还是先把英语学好吧。