1.say是及物动词,后跟事情,句子结构为 Somebody says something to someone.
2.Speak 为及物动词, 当和..人说话时, 和to连用, 句子结构为Somebody speaks to someone.
Speak 也用来形容某人会说哪些语言, 不和to连用,Somebody speaks + language well.
3.Tell 为及物动词, 当作告诉某人某事用, Tell和宾语之间无需任何介词, 句子结构为 Somebody tells someone something.
4.Talk 为及物动词, 意思为和某人交谈, 其句子结构为 Somebody talks with/to somebody about something/somebody.
tell speak say和talk的用法