Posted from TSR Mobile用=use, in Chinese you don't converse in a language, but rather you use a language to converse.
就 has many different meanings, but here it is used for emphasis, and translates sort of like let's.
还(是)
in statements it usually means still
得 means have to/must in this context. Note that when it is used like this it is pronounced dei3 rather its usual pronunciation of de2.
Also, it should be 什么意思,rather than 意思什么.
我在学校学西班牙语的,小时候也学过法语,不过后来觉得太难就沒继续学下去了。
OK I really have to sleep, it's 5:30 am right now. Good luck to all you A Level people!