Hi there,

As titled, I believe there are difference between these (those?) phrases. But I am always confused by when to use one instead of the other.

Could you please help me with this by examples and explanation? Thanks a lot. (BTW, if possible, please correct my English here if there is an error or inappropriate expression.)

Please see forget to do st/ doing st ? and Forget to do / forget doing. Using the 'Search' box at the top right of the screen is a good way to save time and energy (yours and mine).
Thanks. I forgot such a trick.