申请的是美国大学的磁性液体专业，下面是我下PS的一些个人感触和我的范文。

1、PS主要写什么?

你过去做了些什么(主要是研究经历)?产生了什么影响?未来想做什么(为什么选择某个学校)?

2、如何写PS? 美国留学文书写作步骤：研究，研究，再研究

3、实例分析

以下结合我的PS谈谈一些细节。

In the secondterm of my freshman year, I took an elective course called Preparation of Nano-ferrofluid, taught by Prof. XXX. In this class, I learned cutting-edgeinformation about the preparation, performance and application of ferrrofluid. Aftercompleting this class, ferrofluid became an important part of my universitylife. I was interested in the fluid at its first spike and decided to completeresearch about its field-induced interfacial phenomenon.

UndergraduateInnovative Education Foundation：我们学校的特色，创新教育基金项目，类似于国家大学生创新性实验计划 (http://innovation.hust.edu.cn/innovation/index.jsp) ，相信211,985学校的同学对国家大学生创新计划并不陌生，这是体验研究的途径。

At first, I feltdiscouraged that the experiment had not gone well, since I had spent so muchtime preparing for it. The encouragement of Prof. XXX and my reviewing andrevising the previous research strategy, however, gave me the strength toproceed. After several other elaborate tests, the display effect progressed. Icould present the spikes to people through electric control. However, I wantedto make the display more exciting, working to control the movement of ferrofluidvia the voice of people. As always, I moved heaven and earth to fulfill mygoal. But, I failed again, and therein discovered that I have a lot to learn,such as voice control technique.

直言不讳，谈论自己初次做实验时遭遇的困难、失败之处以及如何解决的，体现主动性。

After completingthis project, I began to think more about the scientific principles behind theartistic field-induced phenomenon of ferrofluid spikes. Consequently, I appliedfor and began a second project in an effort to solve quantitative analysisproblems regarding ferrofluid’s behavior on a special magnetic body in extra-magneticfield. I devoted weekends and holidays to my research, even forsaking the ChineseNew Year with my family. After consulting with not only my Chinese professors,but also with overseas academics, such as Dr. xxx and Prof. xxx(这个有关如何陶瓷的，详见陶瓷部分)Unfortunately, however,given my dedication to my research, my studying for the GRE and other personalpressures, my GPA suffered in my third year of college. Yet, I remain confidentin my academic prowess. I won many scholarshiPS every year for my distinguishedperformance both in study and research, which covered my tuition and living expenses.

解释大三GPA低以及GRE偏低的原因

Ferrofluid issmart and versatile. Indeed, it has its own curiosity and interest, which isexpressed in its always trying to find the max flux and shape itself withoutlosing its essence and key features. Similarly,whether I succeed or fail, my objective has always been and always will be thesame: to search constantly for the new and the interesting. The article Magneticfluid and nanoparticle applications to nanotechnology written by Prof. xxx and my private communication with him has expanded my vision and instilledin me many potential research ideas. At MIT, The Research Laboratory ofElectronics and nanoEECS will give me the opportunity to enjoy state-of-the-artequipment and both multidisciplinary and interdisciplinary research. Finally, thepersevering spirit of MIT founder Doctor Rogers also impresses me. I believethat pursuing a Ph.D. at MIT will allow me to continue on my search for the manyqualities of ferrofluid as well as prepare me for my end goal of finding a goodposition in the academic world, perhaPS as a faculty member of a University, orjoining the Ferrotec Corporation, or maybe even becoming an industrialscientist like Dr. xxx

These ambitions may be lofty, but I have the confidence that I can reach my goals viacompleting a Ph.D. at MIT.

主要谈及为什么选择MIT。在谈及教授时，我现在想起来都有点后怕，因为我只谈及了一个教授，这是要冒风险，建议大家在写时，写若干个教授，同时不要 用肯定的语气，“maybe”。我的最后一段基本上都是这种结构，先谈某个教授的某篇文章给了我ideas，然后谈及实验室设备，最后谈到自己的职业规 划。

对于Why XXX university or why XXX department这类问题，其实各大学校，各大系都已经在他们主页上说了出来，只不过有时不是那么明显。你要做的就是写出真正这个学校吸引你的是哪方 面，当然全部照搬学校的说辞肯定是不对。比如某个学校的motto吸引了你，VT的motto“Ut Prosim (That I MayServe)”就吸引了我。再比如某些学校的labrotation可以让你灵活选择，同样都可以写。

我的PS能够写到这样，主要归结于我平时的积累，我每天，每个月，每学年都会反思、都会去总结自己走过的路。当我要写PS时，翻看着以前记录下的每一步，每一个脚印，自己都禁不住流泪。我想首先应该感动自己，然后才有一种感染力去感染别人，感动教授。