1. speak：会（能）说话、会说（语言）；发表讲话、演讲 speak French/Chinese 说法语/汉语 speak in public 在公共场合发言 speak at the meeting 在会上发言 2. say：强调说话的内容 He said sorry to me. 他对我说了对不起。 Don’t forget to say “Hello” to your aunt. It's time to say goodbye. 是说再见的时候了。 Can you say that again? 3. talk：谈话、聊天 talk to/with sb. 和某人交谈 （ to 单项，with 双向） talk about sth. 谈论/讨论某事 Xiaoming often talks to his mother about his school life. 小明经常和他的妈妈谈论他的学校生活。 4. tell：告诉, 讲述 (强调讲给别人听) tell sb. the truth 告诉某人真相 tell a story 讲故事 tell jokes 讲笑话 tell a lie 撒谎 tell sb.to do sth. 告诉某人做某事 He is good at telling jokes. Our teacher often tells us to do our homework first.