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。
Why is it necessary for us to learn English? This is a good question. First, learning English allows me make more friends. Having more friends mean more ways. Second, with a good command of English, I can travel around the world more easy. The world is such big that I want to have a look. Last, learning English can be help me open the door for another culture. It's of great important to have a better understanding about the culture, that is related to English learning.
Because of that is mentioned above, I must try my best to learn English well.
