talk与speak的区别与用法？

翻译如下：
talk与speak的区别与用法
①speak强调说的动作,不强调所说的内容 .作及物动词时,常以某种语言作宾语.
作不及物动词时,常见的搭配形式有：
speak of something/somebody谈到某事（某人）speak to sb 跟某人讲话,此外speak还可用于在较为正式的场合了表演讲或演说.
例句：Can you speak Japanese?你会说日语吗?
She is speaking to her teacher.她正在跟她的老师说话.

② talk 一般为不及物动词,意思是“交谈,谈话,着重强调两具之间的相互说话.
例句：She is talking with Lucy in English.
她正在和露茜用英语交谈.
What are you talking about?你们在谈论什么?
The teacher is talking to him.老师正在和他谈话.

talk强调的是二者之间的对话，表示交谈，谈话。
eg：What are you talking about
eg：She is talking with Dr.Li about her paper...

Speak相比较talk 略正式。。 强调的是动作，部强调内容。
eg：Can you speak English？

eg：He speaks English very well....

speak 强调单方的“说”或“讲”，一般用作不及物动词，要表示“对某人说(某事)”，可用 speak to [with] sb (about sth)。如：

Please speak more slowly. 请说慢一点。

I spoke to [with] the chairman about my idea. 我跟主席说了我的想法。

talk 强调双方“交谈”，一般用作不及物动词，表示“同某人谈论(某事)”，可用 talk to [with] sb (about sth)。如：

He was talking to [with] a friend. 他在同一位朋友谈话。

What are they talking about? 他们在谈论什么?