Questions about example sentences with, and the definition and usage of "Lunch"

A: The lunch lady is the woman that serves food in a cafeteria. Her way, in this sentence, refers to her method of doing things.

A: If you want to have a later breakfast, but an earlier lunch, it's commonly referred to as 'brunch' or an early lunch. 'Supper' is just another word for dinner. You could also say 'early supper.'

A: It's a little open to interpretation, but a "quick lunch" or a "quick bite to eat" is going to be a meal taking much less time than normal.

A: Want to go grab some burgers? <--- might take an hour
B: Sorry. I'm too busy. I'm just going to have a quick lunch here. <---- might take 15 minutes

A: This is a sentence that talks about future plans; in this case, the speaker is planning to have lunch (a midday meal) at a restaurant (the location). The restaurant is described as having a view "overlooking a small hill".

A: It means "I will pay for lunch"

A: "out to lunch" is also slang for "in a daze" or "not paying attention" or "strange" or "confused" or "not mentally present"
--> "Don't pay any attention to him - he's out to lunch"

A: I will eat lunch soon because I am hungry.
I ate too much so my stomach hurts.
My belly is sticking out because I gained weight.

A: "I ate a sandwich for lunch."

A: @lucasg233445 they differ in pronounciation.

A: There is no real difference when it comes to making a proposition to someone. That is, you can just as easily say "Hey, let's do lunch!" or "Hey, let's have lunch". The first comes across as slightly less informal and may seem to suggest that you go somewhere else and have lunch (rather than eating what you brought), but they're basically the same.
However, you cannot really "do lunch" by yourself. "Doing lunch" seems to imply making an event out of lunch with other people. So if you said something like "I had lunch" you could not say "I did lunch". But if you said something like "We had lunch" you could say "We did lunch". I'm not sure if there're any formal rules for how to use it, though. "Doing lunch" is definitely slang so it only sounds right where it's become normal to use it

A: it's the same thing just said differently

A: These mean the same thing, but the emphasis of the sentences are different.
"When we were having lunch, it started snowing." The emphasis is on having lunch.
"We were having lunch when it started snowing." The emphasis is on the snow.

A: There’s no difference, you can say it either way, but I think “have” is used a lot more often. I think most of the time, people say have/had lunch because the word “lunch” makes it obvious that what you’re doing is eating

A: "I ate lunch at 10:00" Natural and correct. Simple past tense. The action is over and finished.
"I have eaten lunch at 10:00". Not correct. "Have eaten" is the present perfect tense and needs to be tied to the present somehow. You can say;
"I have eaten lunch at 10:00 every day this week", because this week is still going on in the present.
"I have always eaten lunch at 10:00", because always is still going on in the present.
"I have eaten lunch at 10:00 since I was a child", because "since" means from then until now, in the present.

A:

I eat lunch in the cafeteria and finished up the leftover food.

A: I had a delicious lunch on a beautiful empty beach./ on a beautiful beach with no one else there.

A: That does sound natural and there are other ways of saying that, too.

After we had lunch, we parted ways.
After I had lunch with him, we parted.

A: These are not the same.
"Have you had lunch" asks whether you have eaten already. (Assuming you normally have lunch.)
Whereas, "do you eat lunch" asks if you have lunch. (Not knowing whether you have this meal regularly.)

A: "Instead of money, you can treat me to some lunch if you like?"

Most people would say: "Instead of money, you can buy me lunch?"

I wouldn't say its particularly common to make someone food, unless you know they are a good cook and they like cooking. Making someone food randomly would be considered odd where I'm from... unless you're very close, like a close friend, family, family-friend, girlfriend/ boyfriend or a partner.

If they are known to be a good cook, or you are close, then you could say: "Instead of money, you could buy or make me some lunch."

A: Correct

A: × -I have McDonald’s today.
✓ - I had McDonald’s (today).

× -I took them back home.
✓ - No, I brought it (back) home.

A: × I always feel sleepy after eating lunch, and my work progress isn’t good during this period.
✓ I always feel sleepy after eating lunch, and my productivity isn’t good during this period.

"work progress" makes sense, but it sounds a little bit strange. Usually you would say something like:
productivity
focus
ability to work
work

A: × ‎My lunch was just a mix of chili paste, sesame oil, a tuna can, and rice.
✓ ‎My lunch was just a mix of chili paste, sesame oil, a can of tuna, and rice.

고추장 과 chili paste 주로 비슷해요.

A: natural except the first one sounds a little weird and poetic, not everyday language. most people say “you have to get ready for lunch, right?”