1。 take a chair（取把椅子）坐下

Won’t you take a chair？

怎麼不坐下呢？

Take a chair， please。

請坐。

Tom took a chair and began to sing。

湯姆坐下來開始唱歌。

Even when he came home， he would take a chair outside and just read。

偶然回家，他也總是坐在外面的椅子上，埋頭看書。

Take a chair please and let’s do homework together。

請坐下，我們一起做作業吧。

2。 take the chair

主持會議或做主席，委員長；開始開會

She takes the chair in all our meetings。

她主持我們所有的會議。

I took the chair at a meeting some time age。

前些日子我主持了一次會議。

He frequently takes the chair and is a very bad chairman。

他經常主持會議，但卻是一個很糟糕的主席。

Tom will normally take the chair at such meetings。

湯姆通常會主持這樣的會議。

Our proposal is that somebody neutral takes the chair。

我們的建議是讓某位中立人士當主席。

Tom will take the chair at the next meeting。

下次會議將由史密斯先生主持。

Mr．Li takes the chair today．

今日是李先生當主席。

另外，hold the chair卻表示擔任教授或系主任一職，例如：

She holds the chair of chemistry in the university。

她是大學的化學系主任。

He holds the chair of philosophy at Oxford。

他是牛津大學哲學系的系主任。

He has been appointed to the chair of sociology at Southampton University

他被任命擔任南安普敦大學的社會學教授一職。

He was elected chair of the city council。

他當選為市議會主席。