Meaning of ACCUSTOM in English
BAD : I am beginning to accustom to the British way of life.
GOOD : I am beginning to get accustomed to the British way of life.
be/become/get/grow accustomed to sth : 'Within a few minutes, my eyes had grown accustomed to the dark.'
Note that, apart from in formal styles, most people prefer be/become/ get/grow used to : 'I am beginning to get used to the British way of life.'
BAD : Where I come from, we are not accustomed to see so many things in the shops.
GOOD : Where I come from, we are not accustomed to seeing so many things in the shops.
be accustomed to doing sth (NOT to do ): 'He was accustomed to leading a life of luxury.'
Longman Common Errors English vocabulary. Английский словарь распространенных ошибок Longman. 2012