增加：在缺词处加一个漏字符号（∧），并在此符号下面写出该加的词。

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。

Dear Jack,

    I'm glad to know that you will come to China for further study. Now let me to tell you what you might be interested in.

    It is known to all, Peking University is one of the top university in China. Study there, you are sure to get improved. It is the first time that you lived in a foreign country alone, but you don't need to worry, because it was located in the business center of Beijing. It is extreme convenient for you to live there. Beside, most people in Beijing are very kind and friendly. Had you been to Beijing, you would have known about it.

    I'll help you find a proper host family nearby if necessary. I'm looking forward to meet you.