英语作文 an unforgettable help

An unforgetable help
I think everybody,perhaps,used to have an unforgetable help or unexpectable experience.Usually,such kind of experience is very impressive.In the summer holiday,when I was reading English in the morning in the park like usual.Suddenly I forgot how to read a certain word in my text-book.I thought and thought,but could not know how to read it out.At that time,one of the middle-aged man just passed by.He found that I stopped reading.He went up to me and sai"Can I help you?"Then he told me how to read the word.His English was beautiful.After that,I knew he was a college student.