It takes a long time to learn to speak a language well.
学会说好一种语言需要花很长的`时间。
The fashion at the time was for teaching mainly the written language.
那时教学时兴的主要是书面语。
A good dictionary is indispensable for learning a foreign language.
一本好词典是学习外语必备的。
I always found languages quite hard at school.
在学校读书时我总觉得语言很难学。
Is English an official language in your country?
英语在你们国家是官方语言吗？