关于used to,be used to doing,be used to do,be accustomed to解释

Question

used to
be used to doing sth
be used to do
be accustomed to
这几个怎么解释，还有后面跟什么，有什么好方法记牢，我从中学时就搞不清楚，搞的我头都大了，大家帮帮我。

Answer 1

1）used to do 过去常常做
I used to read newspapers last year.

2）be used to doing sth=
be accustomed to sth/doing sth
习惯于做某事
I am used to going to company by bus.
我习惯于乘车去公司。
I am accustomed to the weather here.
我已经适应了这里的天气了。

3）be used to do 被用来做（表示被动）
Wood is used to make paper.
木头被用来造纸。

Answer 2

be
accustomed
to中的to个介词,后面如接动词,动词要加ing改成动名词.
be
accustomed
to
doing
规律方法：be
accustomed
to
是固定词组,后面连结doing
动名词和动词不定式一样,其否定形式也是直接在它前面加not.如：
i
get
up
early
in
order
not
to
be
late
for
school.
i
decided
not
to
do
the
homework.
i
feel
like
not
being
disturbed.
i
prefer
not
doing
the
experiment.

Answer 3

be used to be 过去常常做……
be used to doing 习惯做……
be used to do 被用作……
be accustomed to doing习惯做……=be used to doing