簡單grammar問題！

(1) used to = 講以前既習慣(past habit)，現在已沒有了
e.g. I used to work on Sunday.
我以前星期日工作。(現在不是了)

(2) be used to = 已習慣了
e.g. I am used to the cold weather.
我已習慣了寒冷的天氣。
e.g. I am used to living in such a small house.
我已習慣於住在這樣細小的房子。

used to = In the past you did a certain thing and now you do not do it anymore
(follow by normal verb form)
example:

I used to (visit) my relatives. <visit = normal verb form>

Meaning:

I visited my relatives,but now I do not visit them anymore.

be used to/get used to = You always do something and you feel good about it since you often do it(follow by gerund)

I am used to (playing football). < playing football = noun pharse,playing = gerund>

e.g.
I used to work on Saturdays. (that means in the past I have to work on every Saturdays but now I do not have to work on Saturdays)

This compueter program is to be used to calculate the company profit for each month. (passive )

used to + IN.F 表示過去習慣

i used to (play) games . 表示我以前會打機(過去),而家唔會打機

be/get used to + v-ing 表示一直以來的習慣

i am used to (playｉｎｇ)　ｇａｍｅs 我一向都有打機

erm..did u mean 'used to be' and 'used to'??