Englishfor English speakers
have
Verb
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Someone has something if the thing is in their hands. The person is holding or gripping it.
Do you have a spoon, or do you need me to give you one so you can eat the soup?
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If you have uto/u do something, you must do it.
I have to go.
I had to do it.
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Someone has something if the thing is that person's thing: the person owns it; it belongs to the person.
The rich family has a big house.
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If you have you hold something in the mind.
I have a doubt about him.
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If you have you join something.
We have lunch at 13:00.
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You use have to say that you suffer from something or to tell the experience.
I have a defective vision. (I don't see well.)
He had a wonderful time with his friends.
some
Determinative
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Some is an amount or number of something; the amount is not exact or specific.
Would you like some grapes?
Everyone is wrong some of the time.
He had edited the paper for some years.
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An unspecified or unknown.
I've just met some man who said he knew you.
lunch
Noun
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Lunch is the meal that we eat in the middle of the day.
Shall we have sandwiches for lunch?
"Is it lunch time yet?" "No, it's only 10:30."
lunch
Verb
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If you lunch, you have lunch.
Most people lunch around noon time.