一道英语改错题（初一的)

Don't forget to ask your classmate for help 不要忘了去向你的同学求助

楼主只要记住 forget to do sth. 是只还没做的事

而forget doing sth. 是忘了做过的事

例句：Don't forget to close the door when you leave 临走的时候别忘了关门

I forget telling him the news in the afternoon.我忘了我下午的时候告诉过他这个消息了

Don't forget to ask your classmate for helping.

forget to do sth
for是介词，后面加动词ing

应该对，这是我第一次做改错题

Don't forget to ask your classmate for help.
forget要用动词不定式 to do 或 doing

Don't forget to ask your classmate for help.

Don't forget to ask your classmate for help.

Don't forget to ask your classmate for help