she hasn't studied English for a long time 她很长时间没学英语了.（说明近期有在学,只是中断）
she hasn't studied English for long 她很久没学英语了.（说明很久很久没碰英语）
for long长久
for a long time很长时间,很久谢谢，另外还想问一句：Such a life she lived.这个语序对吗？还会说应该是Such a life lived she.谢谢Such a life she lived.这个语序是对的！谢谢！