1.老师在英语中怎么写

有两种， 1,practice teacher n. （本身还是学生的）实习老师 2,student teacher n.（名词） A college student pursuing a degree in education who, as an intern in teaching methodology, teaches in a classroom under the supervision and guidance of an experienced, certified teacher.Also called practice teacher 实习老师：修教育学学位的大学学生，作为教育方法的实习者，需在一有经验的、证明老师监督指导下在课堂中授课也作 practice teacher 所以用那个都是可以的~~。

2.哪位好心的大大知道@用英文怎么说

这个是@的起源That little "a" with a circle curling around it that is found in email addresses is most commonly referred to as the "at" symbol.小写字母a外加个圆圈，这一符号常出现在email（电子邮件）地址中，通常是作为"at"（在）的标记.Surprisingly though,there is no official,universal name for this sign.There are dozens of strange terms to describe the @ symbol.然而令人感到惊奇的是，这一标记居然没有官方的，通用的名称.有几十个奇怪的术语用来描绘@这一符号.Before it became the standard symbol for electronic mail,the @ symbol was used to represent the cost or weight of something.For instance,if you purchased 6 apples,you might write it as 6 apples @ $1.10 each.@这一符号在成为电子邮件的标准符号之前，曾被用来表示物品的单价或质量.例如，你买6只苹果.就可以写成"六只苹果，每只@$1.10，表示每只苹果1.10美元.With the introduction of e-mail came the popularity of the @ symbol.The @ symbol or the "at sign" separates a person's online user name from his mail server address.For instance,edu@csai.cn.Its widespread use on the Internet made it necessary to put this symbol on keyboards in other countries that have never seen or used the symbol before.As a result,there is really no official name for this symbol.随着电子邮件的使用，@这一符号越来越普及了.符号@或'at'标记将上网用户的姓名与其邮件的服务器地址分开.例如：edu@csai.cn.这一符号在因特网上的广泛使用使得许多以前从未见过或使用过它的国家必须在它们的电脑键盘上加上这一符号键，结果造成这一符号并没有真正的官方名称.The actual origin of the @ symbol remains an enigma.@符号的确切起源仍然是谜.History tells us that the @ symbol stemmed from the tired hands of the medieval monks.During the Middle Ages before the invention of printing presses,every letter of a word had to be painstakingly transcribed by hand for each copy of a published book.The monks that performed these long,tedious copying duties looked for ways to reduce the number of individual strokes per word for common words.Although the word "at" is quite short to begin with,it was a common enough word in texts and documents that medieval monks thought it would be quicker and easier to shorten the word "at" even more.As a result,the monks looped the "t" around the "a" and created it into a circle-eliminating two strokes of the pen.历史告诉我们，@这一符号起源于中世纪僧侣疲劳的双手.中世纪时印刷机尚未发明，要出版一本书，每一个单词的每一个字母都得用手工辛苦的刻出来.从事这项长时间辛苦誊写刻画的僧侣们就开始寻找减少每一个常用字笔画数的方法.虽然这一单词开始写起来很短，但它在文本和文件中频繁出现.中世纪的僧侣们就想到如果能进一步简化它，就可以写起来更快更容易.结果，僧侣们就在a四周画了一个圈，从而省却了字母"t"的两个笔划.这里再追加一个：@符号的来源和含义@符号在英文中曾含有两种意思，即“在”或“单价”.它的前一种意思是因其发音类似于英文at，于是常被作为“在”的代名词来使用.如“明天早晨在学校等”的英文便条就 成了“wait you @ schoolmorning”.除了at外，它又有each的含义，所以“@”也常常用 来表示商品的单价符号.美国的一位电脑工程师雷.汤林森确立了@在电子邮件中的地位，赋予符号“@”新意.为了能让用户方便地在网络上收发电子邮件，1971年他受命寻找一种电脑地址的格式，能让用户方便地发送电子邮件.由于“@”不会与人名产生重复，因此被选中.在 E-MAIL 地址格式中，“@”将人名与电脑地址分开，让文件在网络中传输不会产生误读.“@”的发音和“at”有些类似，用在 E-MAIL 地址格式中正好表示“在…”的意思.“@”就这 样进入了电脑网络.汤林森设计的电子邮件的表现格式为“人名代码+电脑主机或公司代码+电脑主机所属 机构的性质代码+两个字母表示的国际代码”.这就是现在我们所用电子邮件地址的格式，其中用“@”符号把用户名和电脑地址分开，使电子邮件能通过网络准确无误地传送.。