回答：此句雖不完整,但句意是：我在此發(fā)言,同意/贊成...(某人/某事).這句不是在in favor of 前面加speaking,I am speaking是指說(shuō)話者正在發(fā)言；而介詞短語(yǔ)in favor of意為：有利于；支持；贊同.

又如：Perhaps the judge would rule in favor of me.
或許法官會(huì)就此做出有利于我的裁決.
People are surprised to learn that the so-called "liberals" are not in favor of freedom.
令人感到詫異的是,那些所謂的“自由主義者”居然不贊同自由.
Some people are in favor of reform, and others have concerns.
一些人贊同進(jìn)行改革,而另一些人心存疑惑. 歡迎提問,樂意解答；愿你滿意, 望你采納.