Whats mean of How come?

informal. C1. used to ask about the reason for something: So how come you got an invitation and not me?

Is it correct to say how come?

But I’m certain that “how come” is the more grammatical, standard option….English translation: how come.

SUMMARY OF ALL EXPLANATIONS PROVIDED
5 +15	how come	Mark Berelekhis
4 +4	how come (Standard English) vs. how comes (stigmatized)	Michael Powers (PhD)

Is how come rude?

“How come” is actually often seen as a more polite, less confrontational way of asking “why?” in standard American English. I encourage my adult ESL students to use it instead of WHY in most situations. Often when a person is asked WHY, they feel somewhat defensive, as if the person asking is challenging the action.

How came or how come?

“How come” is all right to use in informal speech, but the tense seems to be wrong.

Where does the saying and how come from?

Indicating ‘intensive emphasis of what someone else has just said,’ ‘and how!’ is a long-popular catchphrase first recorded in 1924. The Americanism possibly derives from the German ‘und wie!’ or the Italian ‘e come!’

Is obviously a rude word?

There’s just no doubt about it. Obviously is a word people use when they are sure of something and sure that it’s plainly clear to others. People also use this word when they’re being mean or sarcastic. If you didn’t know who walked on the moon, a friend might say, “Obviously, it was Neil Armstrong!”

When use came or come?

The past tense or simple past tense of come is came “I have come” is the present perfect tense which is formed using the present form of ‘to be’ + the verb’s conjugation that is in the past form.

What does when you come mean?

When will you come is more like asking a person a specific time of his/her arrival (probably because you’ll be waiting). When do you come, on the other hand means, generally asking a prson about his/her usual timings of arrival.