关于科技双刃剑的英语作文大学【一】
在正文下面的一、二行处，从信纸的中间偏右处开始，第一个词开头要大写，句末用逗号。不同的对象，结束语的写法也不同。
(1写给家人、亲戚，用your loving grandfather，lovingly yours，lovingly等;
(2写给熟人、朋友，用yours cordially，yours affectionately等;
(3写业务信函用truely yours(yours truely，faithfully yours(yours faithfully等;
(4对上级、长辈用yours obediently(obediently yours，yours respectfully(respectfully yours等。
关于科技双刃剑的英语作文大学【二】
位置在下面称呼语隔一行，是信的核心部分。因此要求正文层次分明、简单易懂。和中文信不同的\'是，正文中一般不用hello!(你好!
正文有缩进式和齐头式两种。每段书信第一行的第一个字母稍微向右缩进些，通常以五个字母为宜，每段第二行从左面顶格写起，这就是缩进式。
但美国人写信各段落往往不用缩进式，用齐头式，即每一行都从左面顶格写起。商务信件大都采用齐头式的写法。
关于科技双刃剑的英语作文大学【三】
A Letter to the University President
Dear Sir,
I am writing to put up some suggestions concerning our teaching and campus life.
As a sophomore from the Math Department, I am quite satisfied with the present condition of my university, but I餯 like to say that there is still some room for improvement.
First, I believe that more attention should be paid to the guidance of our study methods. To some extent, university students are capable of studying by themselves, but more often than never, we find ourselves at a loss as to choose good books to read and appropriate topics for our research. It is clear that we need some advice from our teachers. If our teachers can lecture more on how to learn by yourself for us, especially for the freshmen, our skills will be further improved.
Second, more activities should be conducted to make our campus life more colorful. I sorry to say that the present life on campus is quite boring. Every day we have classes, read in the library, or stay in the dormitory. Life here is routine. We need more meaningful activities organized to enrich our college life and enable us to study more efficiently.
