english
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general::
Phrase(s): How (are) you doing? a standard greeting inquiry. (The entry without are is informal and usually pronounced "How ya doin’?") • Jane: How are you doing? Mary: I’m okay. What about you? Jane: Likewise. • Sally: Sue, this is my little brother, Bill. Sue: How are you, Bill? Bill: Okay. How you doing?
McGrawhill's American Idioms And Phrasal Verbs