I'll attend this welcoming gathering for Mr. Lee. (我會親自出席這一次為了歡迎李先生所舉辦的聚會。)

I'll attend this welcoming gathering for Mr. Lee.

我會親自出席這一次為了歡迎李先生所舉辦的聚會。

I'll attend the welcoming gathering for Mr. Lee.

我會親自出席為了歡迎李先生所舉辦的聚會。