帮我改正这段短文中的拼写和语法错误。
<以下段落>
"I has been study English for three years. This is my first trip to American. I hopes to improving my English while I is here. I's looking forward to visiting all of the famous sight scene, such as the Statue of Libertys."
"I have been studying English for three years. This is my first trip to America. I hope to improve my English while I am here. I am looking forward to visiting all of the famous sights, such as the Statue of Liberty."