have lunch
We did not take our lunch. We have not had our lunch. We have not taken lunch.
What did you have for lunch. It makes much more sense than what did you had for lunch.
Unless your lunch is literally running from you, it is "go to lunch."
The past tense of "have lunch" is "had lunch."
Exit to lunch
Breakfast and lunch were . . . "
The noun in "You ate lunch." is lunch.
The lunch box had neat designs on it. Lunch box is used to carry lunch. Lunch box can preserve food for a longer time.
The possessive form of the noun phrase 'the lunch of the student' is: the student's lunch.
The correct form of invitation in "you are invited to lunch" or "you are invited at lunch" is "you are invited to lunch". You could also say, "you are invited to lunch at my house" as this would be grammatically correct.
Have a lunch.