I am surprised ( to learn that ) you give countenance to such conduct.

我惊讶的是你竟赞成这种做法.

《现代英汉综合大词典》

I am surprised you give countenance to such conduct.

我很惊奇你会对这样的行为表示赞同.

辞典例句

To adopt the fruits of sin was to give countenance to it.

收养罪恶的果实就等于纵容罪恶.

辞典例句