答：talk是“谈”,about是“关于”,to是‘对着’,with是‘和...一起’,
所以talk about 相当于汉语的“谈论”,宾语可以是事情,与可以是人,
talk to是“对...谈话”,宾语是人,常为上级对下级.
talk with是“和..交谈”,宾语是人,同辈,或当同辈来看.