"I can talk to him about anything" 可以用来表示我可以和他谈论任何事情。这是一个英语固定短语。
例句:
"I can talk to my best friend about anything, she's always there for me." (我可以和我最好的朋友谈论任何事情,她总是在我身边。)
"I feel pke I can talk to my therapist about anything, she's very understanding." (我觉得我可以和我的治疗师谈论任何事情,她非常理解。)
这句话的来源是英语中的固定短语,通过使用"can"来表示能力,"talk"来表示谈论,和"about anything"来表示对任何事情都可以谈论。