林青：汉生，你学英语学了多久？ 汉生：差不多六年了。 林青：多长时间学一次？ 汉生：以前每周学两次，现在每周一次。 HanSheng, how long have you learnt English?
Almost 6 years.
How often do you study it?
I used to study it twice a week, but now only once a week.

• learnt [lə:nt]   learn 的过去式(分词)   (初中英语单词)