给定一个段落，让模型检查其中的语法和拼写错误。
这是一个包含拼写和语法错误的段落，请对其进行校对：
"事实上，I havent seen my ftiend in quite sometimes. Im not shure why they avoid me, unlees its because of my habit of constantly making grammar and spelling mistakes."
以下是已校对的段落：

事实上，I haven't seen my friend in quite some time. I'm not sure why they avoid me, unless it's because of my habit of constantly making grammar and spelling mistakes.