一、speak是什么意思？
中文：
vi. 说话；演讲；表明；陈述
vt. 讲话；发言；讲演
speak的相关短语如下：
speak about 谈及 ; 聊及 ; 谈起 ; 讲起
speak of 谈到 ; 谈及 ; 提到 ; 更不用说
speak with 和…商量；和…谈话
speak out 畅所欲言；大胆地说；大声地说
speak in 用某种语言说
speak up 更大声地说；无保留地说出
speak for 要求得到；代表…讲话
speak ill of 诋毁；说…的坏话
speak at 指桑骂槐；暗讽
speak highly of 赞扬
例句：
（1）He will speak to us next week.
下星期他将给我们做讲演。
（2）It saddened her to watch him speak rudely like that.
看到他那样粗暴无礼地说话，她感到十分痛心。
（3）He stood up to speak but the audience cried him down.
他站起来讲话， 但听众把他轰了下去。
二、Talkback的用法和搭配短语？
①
talkback意思是回话。talkback是一款由官方开发的系统软件，它的定位是帮助盲人或者视力有障碍的用户提供语言辅助。让盲人或者视力受损的用户可以非常方便的与他们的设备进行有效的互动。当使用android自带的程序时，talkback会实时的提供语言反馈。
（一）Building talkback system is an important part of intelligent community.
对讲系统是智能小区系统不可缺少的组成部分。
（二）Design of Management Box for Intelligent Talkback System.
智能小区对讲系统中管理机环节的设计。
（三）The Design of Decode Machinery for Intelligent Talkback System.
智能对讲系统中解码器环节的设计。
（四）Talkback: does your boss give regular performance reviews.
反馈：你的老板是否定期进行绩效评估。
（五）Design of the wireless visible talkback doorbell.
无线可视双向对讲门铃设计
②
take tov. 与 ... 说话； 责骂
Don't talk to me about that fellow.
别跟我谈起那个家伙。
He stopped to talk to me when seeing me.
看到我的时候，他停下来和我说话。
talk back 用作及物动词 (vt. ) 顶嘴; 还口; 强嘴; 抬杠
He tried to talk back,but his sister vociferously talked him down.
他想回嘴，但他姐姐大声吵嚷，压倒了他。
turn overv.滚动；翻过来；营业额为；周转；移交；翻阅
If you turn over you might find it easier to get to sleep.
你翻翻身,就容易睡着了。
This shop turns over no less than 100 pounds a day.
这家商店营业额一天不少于100英镑。
This supermarket turns over its stock very rapidly.
这家超级商场商品周转很快。
He turned the business over to his daughter.
他把生意移交给女儿管理。
He was turning over pages of an encyclopedia.
三、举止严肃有礼貌英语短语？
1、Politeness And Appropriateness;礼貌与得体——从礼貌及礼貌原则的文化特性谈起
2、" After You" Is Good Manners.“您先请”是礼貌。
3、Glacial Indifference, Politeness冷漠、 冷淡的礼貌.
4、He Is Wanting In Courage [Courtesy].他缺乏勇气 [礼貌] 。
5、A Gloss Of Good Manners假装 [表面] 的礼貌
6、With Regret (Used In Polite Formulas).抱歉地（礼貌用语）。
7、S - Politeness Is Insulting.故意要表示礼貌等于是不礼貌。
8、Virtue And Courtesy Go Hand In Hand.美德与礼貌携手并行。美德便有礼貌。
9、Politeness Principle And Differences Between English And Chinese Polite Language;礼貌原则与英汉礼貌用语的文化差异