增加：在缺词处加一个漏字符号(∧)，并在其下面写出该加的词。
删除：把多余的词用斜线(＼)划掉。
修改：在错的词下划一横线，并在该词下面写出修改后的词。
注意：1．每处错误及其修改均仅限一词；
2．只允许修改10处，多者(从第11处起)不计分。
I participated the Secondary School Program in Harvard last summer. I spend half of the day on my class and homework, and then I'd be free to do that I wanted. Since my course was an 8-credit course, it was a lot fast than other summer school course. I had to learn how to keep up with the pace of my class and figure out how to study efficient. For me, take notes was of great help. During my study, I also got to know many professors who was available for extra help whenever I needed it. The resources and opportunities combined with the environment here made me want to attend to Harvard even more. Now back in China, I often miss the experience of studying abroad.
