Why Are You Friends With All My Ex-Girlfriends? - Correcting a Sentence - 常规

No, the sentence 'Why can you be friends of all my exgirlfriends' is not grammatically correct. Here's a corrected version:

'Why are you friends with all my ex-girlfriends?'

The original sentence contains a few errors:

'Can' vs. 'Are': The auxiliary verb 'can' suggests ability, but the question is about a current state. 'Are' is the correct choice for the present tense.
'Friends of' vs. 'Friends with': 'Friends of' implies a more distant or formal relationship, while 'friends with' signifies a closer and more active connection. In this case, 'friends with' is the better fit.
'Exgirlfriends' vs. 'Ex-Girlfriends': Hyphenation is needed for compound words like 'ex-girlfriends' to indicate that the term refers to a specific type of girlfriend.