I'm a student of college who major in English. Last year, I took part in an English speech contest hold in our city. I prepared very hardly for it and practiced over and over again. Unluckily, I got the second place in the contest. But I was not satisfied with the result. I thought I could have done better if I had been more confident. Now I realize that self-confidence is very important in many field. If we lack of confidence, we may be afraid of doing things we can do well. Therefore, we should build up our self-confidence and face the challenges bravely.
答案解析：
1.第一句中的“college”前面應加上冠詞“a”，表示“一個大學生”。所以應改為“a college”。
2.“who major in English”中“major”為動詞，而句子中缺少謂語，應使用“major”的第三人稱單數形式
“majors”。所以應改為“who majors in English”。
3.“hold in our city”前缺少被動語態的助動詞“was”，因為“contest”與“hold”之間是被動關系。所以應改為“held in our city”。
4.“I prepared very hardly for it”中“hardly”表示“幾乎不”，與句意不符，應使用“hard”表示“努力地”。所以應改為“I prepared very hard for it”。
5.“Unluckily, I got the second place in the contest.”中“the second place”通常不表示“第二名”，而是“第二名之后的位置”，應改為“second place”或“the first place”。由于后文提到作者不滿意這個結果，所以這里應改為“second place”。
6.“many field”中“field”為可數名詞，前面有“many”修飾，應使用復數形式。所以應改為“many fields”。
7.“If we lack of confidence”中“lack”為動詞，表示“缺乏”，后面不需要介詞“of”。所以應改為“If we lack confidence”。
