题目内容：

短文改错

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。作文中共有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：在缺词处加一个漏子符号（∧）并在其下面写出该加的词。

删除：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。

Boys and girls! I’d like to share my swimming experience with you. My swimming experience is extreme interesting. There was a time when I swim like a rock. This went on till one day when I was fishing with a friend of mine at the pond. I slipped into it. Had my friend not come to my rescue, I would have drowned. Since then, I had come to know the important of learning to swim. I didn’t attend at any training class but learned it all by myself. Strange to say, I have no difficult swimming at all now. Though the way I swim looks awkward (笨拙的), at least it can keep me floating. Think of this, I feel quite satisfying.

Yours,

Zhang Ming