take advantage of
US /teɪk ədˈvæn.tɪdʒ ʌv/
UK /teɪk ədˈvæn.tɪdʒ ʌv/

1.
to make good use of something; to benefit from something
:
•
You should take advantage of this opportunity.
•
We can take advantage of the good weather to go for a walk.
2.
to treat someone unfairly in order to get what you want, especially someone who is kind or easy to deceive
:
•
Don't let him take advantage of your generosity.
•
She felt like her boss was always taking advantage of her willingness to work overtime.