get used to

Examples:

1. Of course, they do it all the time but that doesn't make it any easier to get used to.

2. It takes time for students to get used to a new teacher.

3. It's amazing what you can get used to.

4. I'll buy the drinks. I'm too old to get used to women buying my drinks.

慣れる

not used to

慣れていない

1. I grew up in the south, so I'm not used to this cold weather.

2. He's having a hard time. He's not used to this demanding schedule.