原文：
Hi, Marilyn, What are you doing?
Just sketching.
I've been thinking a lot about our responsibilities in the past few weeks.
I never stop thinking about them.
I've been wrestling with the question of whether I go back to work or not.
笔记：
1.stop to do sth 停下来做某事（停下来去做另一件事情）——stop doing sth 停止做某事（停止手上正在做的事情）。
I'm tired. Let's stop to have a rest.
我累了，咱们停下来休息一会吧。
It's time for class. Stop talking.
上课了，别说话了。
2.forget to do sth 忘记做某事（事情还没有做）——forget doing sth 忘记做过某事（事情已经做了）
Don't forget to turn off the light when you leave the room。
离开房间时，别忘记关灯
I forget telling you that before.
我忘记之前已告诉过你那件事了。
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听友227098381
stop (doing A) to do (B): 停止做A，转而做B；stop doing Sth. 停止做某事