与亲家吃饭的话怎么说英语

To say "have a meal with relatives" in Engpsh, you can say "have dinner with family" or "have lunch with relatives." For example:

"I'm going to have dinner with my family tonight."
"We're planning to have lunch with some of our relatives on Sunday."

You can also use the phrase "eat with" instead of "have a meal with." For example:

"I'm going to eat with my family tonight."
"We're planning to eat with some of our relatives on Sunday."

If you want to be more specific about the relationship, you can use terms pke "aunt," "uncle," "cousin," "niece," "nephew," etc. For example:

"I'm going to have dinner with my aunt and uncle."
"We're planning to have lunch with my cousins on Sunday."