题目内容：
下面内容是某教师讲解remember doing something和remember to do something语言点时的课堂实录。Teacher: Li Hua, what did you do last Sunday morning?
Li Hua: I played badminton with my friends.
Teacher (to the class): Did Hua remember playingbadminton with her friends?
Students: Yes, she did
Teacher: Liu Ying, what did you do last Sunday morning?
Liu Ying: I visited my grandparents
Teacher (to the class): Did Liu Ying remember visi
ting her grandparents?
Students: Yes, she did.
Teacher: What will you do this Sunday morning then, Liu Ying?
Liu Ying: I will see a film with my sister
Teacher: Please remember to take the tickets with you and be there on time.
Liu Ying: Sure, I will remember to do that. Thank you.
Teacher: Now, class. Can you tell the difference between "remember doing sth."
and "remember to do sth." ? Look at the following diagrams:
请根据此教学情景回答下列问题:
1.该教师在讲解知识点时运用了哪两种方法?
2.这些方法各自有何特点?能发挥什么作用?
3.使用这些方法时应重点注意什么?
参考答案：
答案解析：