I haven't studied English for a long time.

我已经好长时间没学英语了。

youdao

Look, I studied karate for a long time.

你能陪我一起去上空手道课吗？

youdao

I have studied with my group for a long time.

我已经和小组学习很长时间了。

youdao

I haven't studied science for a long time.

我没有研究了很长时间的科学。

youdao

I studied English for 8 years at school - a long time ago.

很久以前，我在学校里学习英文长达8年之久。

youdao

I studied French and German at university a long time ago!

我在大学生里学过法语和德语(很久以前了！)

youdao

I studied French and German at university a long time ago!

我在大学生里学过法语和德语(很久以前了！)

youdao