Help yourself to... 请随便吃……
1. Make yourself at home. Help yourself to some fish.
2. Help yourself to the refrigerator.
3. Help yourself to some steak. I made it especially for you.
A: Thanks for inviting me over for dinner this evening.
B: You're welcome.
A: It looks delicious.
B: Well here. Help yourself to some shrimp. It's fresh.