I confused and I don't know how to say it.
He can't play now.
He can't plays now.
*** A NON-TEACHER"S OPINION ***
(1) The correct sentence is "He can't play now."
(2) The rule: After an auxiliary verb, ALWAYS use the
base form of the verb (the form you find in the dictionary.
NEVER use the "s" form):
She cannot speak Mandarin Chinese.
He will visit us tomorrow.
Yes, she may borrow my cellphone.