Lunch is actually a big concept, which can be understood as a pause, that is, a sentence break when the sentence is not finished, usually expressed by commas or pauses. There are two ways to express a meal in the middle:
Primary school is a て-shaped table.
You can use ますすますすすすすすすすすすすす.
て-shaped table can have several meanings, that is, it can indicate sequential occurrence and juxtaposition, which was learned by N5; I learned to show cause and effect in N4.
In Japanese papers, you can use ます in the middle article to indicate the middle meal or the progressive form of verbs.