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（\）划掉。

修改：在错的词下画一横线，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。

As is well-known that birds are our friends. But the large number of birds have been killed for food. The other day I was walking in the woods while a shot was heard. Hearing the shot, the bird in the trees flew to all directions. A bird was injured badly and looked sadly. Finding the bird injured, so I decided to take it home. At home I take good care of it. When it recovered, I returned itself to the woods. I hope something should be done to prevent birds from killed.

【答案】 is well-known that birds are our friends. But large number of birds have been killed for food. The other day I was walking in the woods a shot was heard. Hearing the shot, the in the trees flew all directions. A bird was injured badly and looked . Finding the bird injured, I decided to take it home. At home I good care of it. When it recovered, I returned to the woods. I hope something should be done to prevent birds from killed.

【解析】1.that从句是真正的主语，所以此处用it作形式主语。故把As改为It。

2.a large number of许多，大量；the number of……的数量。根据句意“许多鸟已经被杀死了”，所以把the改为a。

3.be doing sth.…when“正在做某事……这时”，是固定结构。所以把while改为when。

4.句意：好多鸟朝四面八方飞去。所以把bird改为birds。

5.in all directions朝四面八方，是固定结构。所以把to改为in。

6.句意：看起来很伤心。look此处是系动词用法，所以其后应是形容词。故把sadly改为sad。

7.finding是非谓语动词，所以不能加连词，故去掉so。

8.作者在叙述发生在过去的事情，应用过去时态，所以把take改为took。

9.此处是我把这只鸟放回到森林中。主语和宾语指代的不是同一个人或物，所以此处不能用反身代词。故把itself改为it。

10.birds和kill之间是被动关系，所以应用动名词的被动形式。故在killed前面加being。