1、forget doing sth意//www.souquanme.com思是忘记做过某事，表示已经过去。列：I foget where I having met him. 而forget to do sth 表示忘记去做某事。列：Don'tforget to do 搜趣网your school work.
2、everyday是形容词，形容词+名词的结构中，形容词起修饰限制名词的作用。你可以去这里看一下everyd搜趣网ay的意思：http://dict.baidu.com/s?wd=everyday

forget
doing
sth
忘记做过某事
i"ll
never
forget
findi搜趣网ng
that
rare
old
coin
in
my
gardon.
mary
will
never
forget
seeing
the
exciting
film.
i
forgot
writing
to
him,so
i
wrote
again.
he
forgot
turning
the
light
off.
i
forgot
telling
him
the
truth.
he
forgot
writing
a
letter.
差不多就这样了..打不下去了~
纯手打哦~~~

forget to do 是忘记去做某事,没有做过
forget doing 是忘记做过某事
remember to do 是记得去做某事,是还没做
remember doing 是记得做过某事,已经做过了