The cover letter should always be included when sending your resume or CV for a possible job interview. This letter of application serves the purpose or introducing you and asking for an interview. The most important aspect of a successful cover letter is to introduce yourself as an ideal candidate for the job. To do this, your cover letter should include point out the following.
想要获得一个宝贵的面试机会，在投简历的时候必须谨记要附上求职信。它能够清晰地向读者介绍自己，从而获得面试机会。一封成功的求职信，必须是最好的媒介，它能把你的闪光点展示给雇主看。因此，你的求职信要注意突出以下几点：

●How you found the job advertisement
●最初是从何种渠道知道招聘信息的

●One or two specific examples of your job experience that matches the job advertisement exactly
●一到两个相关的工作经验例子

●A call for specific action on the part of the employer
●雇主的特定要求

●A reference to your resume
●简历的引言

Here is an outline to writing a successful cover letter.
以下是一封成功的求职信的大纲。

Opening paragraph 首段

Opening paragraph - Use one of the following to bring yourself to the attention of the reader and make clear what job you are applying for:
首段：使用下面的其中一种开篇形式来吸引面试官的注意，并且要清晰说明你所申请的职位。

●Summarize the opening
●开头小结

●Name the opening
●开头命名

●Request an opening
●开头请求

●Question the availability of an opening
●开头提问

Middle paragraph(s) 中间段

Middle paragraph(s)- Use one of the following in each of your middle paragraphs to provide the reader with plenty of reasons to invite you to an interview:
中段：为了让面试官给你提供面试的机会，求职信的中间应该包括以下的内容：

●Education
●教育经历

●Work experience
●工作经历

●Ability to work with others and/or alone
●与人合作/独立完成任务的能力

●Interest in your field
●专业领域的兴趣

●Interest in the company
●对本公司的兴趣

●Responsibilities in previous positions
●上一份工作的岗位职责

Closing Pragraph 尾段

●Closing paragraph - Use the closing paragraph to ensure action on the part of the reader
●尾段：最后一段用于提示本文已结束。

The last paragraph 最后一段

The last paragraph needs to help ensure that action is taken. You can ask for an interview appointment time, stating that you will be happy to come to the employer's office when convenient. Make it easy for the reader to follow-up by providing your telephone number and email address.
最后一段提示求职信的主要内容已经结束。此时，你可以询问面试的时间并表示你非常乐意在面试官方便的时候进行面试。内容尽可能简洁易懂，并把个人联系方式和邮箱地址留下。

Important Solutation Notes 使用套语要注意

●Begin your cover letter by placing your address first, followed by the address of the company you are writing to.
●开始先写上个人地址，然后是投职的公司地址。

●Use complete title and address; don't abbreviate.
●使用完整的标题和地址，千万不要缩写，以免造成不必要的理解混乱。

● Always make an effort to write directly to the person in charge of hiring.
● 把信写给人力资源部主管。

● Always sign letters.
● 记住要亲笔签名。