你想表达的意思应该是有些自谦,此处不该使用forgive和sorry,这两个词的是对犯错误了而寻求原谅。建议使用excuse me,my spoken english is poor.
Please forgive me my poor english.
excuse me ,sir .my yinyu is poor.
例如“I don't know the manners of your country really ,If I do something wrong, please not be angry.”
请采纳。
Excuse me, my English is poor