题目内容：

假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。

增加：在缺词处加一个漏字符号（∧），并在其下面写出修改后的词。

删除：把多余的词用斜线（\）划掉。

修改：在错的词下面画一横线，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。

My swimming experience is extreme interesting. There was a time when I swim like a rock. This went on till one day that I was fishing with a friend of mine at nearby pond. I slipped into one. If my friend had not come to my rescue, I would have been drowned. Ever since then, I had come to know the importance of learning to swim. I decided to learn to swim. I didn’t attend to any training class but learned it all for myself. And now I have no difficulty swimming at all. Because the way I swim looks awkward (笨拙的), at least it can keep me floating. Thinking of this, I feel quite satisfying.