Wah How to use Be used to + noun / gerund.

We already know that used to is used to refer something that happened regularly in the past and no longer happen now.
Wah How to use "Used to"

1. Be used to + noun / gerund 
To be familiar with something or doing something.
If we are used to something. It means we don't find it unusual or strange. 

I am used to Japanese food.
He is not used to Japanese food.
Are you used to Japanese food?

    I found it difficult to live in this city at first but now I am used to it.
    (Living in this city is no longer a problem. It seems typical.)
    I am used to my new job. (It's fine now.)
    These men are used to hard work.
    Gal is used to season food.

Wah How to use "Used to"

We use "Used to + v." to refer something that happened regularly in the past but does not happen now. 

Affirmative           
     You used to visit Wah Wasabi's website every day but now you never visit it again. (T__T - Feeling sad)
     I used to be an adventurer like you until I took an arrow in the knee. (FUS RO DAH !!!)

Negative
     I didn't used to smoke. is incorrect. 
     I didn't use to smoke. (I didn't smoke in the past but I smoke now.) 
     I never used to smoke. 

Interrogative
     Did you used to play soccer? is incorrect. 
     Did you use to play soccer? 
     Did he use to smoke?

We can also use used to describe the state of something...