根据所给图片信息和英语提示，完成句子。

1. enjoy, skate, two years ago 

    _____________________________________________

2. take, pills, had better 

    _____________________________________________

3. 6:30 p.m., have dinner, yesterday 

   _____________________________________________

4. used to, now, like 

  _____________________________________________

5. visit, next week 

  _____________________________________________

简述学习动机的培养。