Bernhard Sulzer: how come is a standard phrase but it is not necessarily always acceptable English (more a colloquialism); how comes - if it's not short for how comes it - is definitely slang and grammatically wrong. / Thanks! ;-)
In this way, when to use come or comes?
When the noun is singular, we conjugate with comes; when the noun is plural, we conjugate with come. Every Wednesday, five of my friends come over – Jane comes with Harry, but David and Betsy come with Linda.
How do you use what about?
“What about…?” and “How about…?” are very similar, but there is a slight difference.
- Use “How about?” to suggest an action and to “open” possibilities: “I've got the day off from work tomorrow.
- Use “What about?” to mention an objection or a potential problem:
- “How about you?” and “What about you?” are both correct!
Who come or who comes?
Consider: Picnics come in the summer, the sun comes at dawn. When the noun is singular, we conjugate with comes; when the noun is plural, we conjugate with come. Every Wednesday, five of my friends come over – Jane comes with Harry, but David and Betsy come with Linda.
How do you respond to How about you?
Now, when someone asks “How are you?” (or “How's it going?” or “Wassup?”), the classic response is “I'm fine, thanks.”