A
1.say vt.强调说话的内容,例：I can say it in English.；
2.speak (1)vi.强调说话的动作 例：The baby can't speak.
（2）vt.后面加语言,例：speak English
3.talk 强调两个人之间的谈话 talk with sb\talk to sb.
4.speak to sb