They were surprised to find that he'd already left.

他们惊奇地发现他已经走了。

《牛津词典》

Many were surprised to see him exposed like this in the midst of a large crowd.

很多人看到他这样暴露在一大群人当中，都感到很意外。

《柯林斯英汉双解大词典》

Many people walking in the park were surprised to see the artwork.

许多在公园散步的人看到这件艺术品都很惊讶。

youdao

They were surprised to find that copies of two books disappeared from their devices.

VOA: special.2009.07.24

I'll bet you, even if you're reading this for the second or the third time, you were surprised again when you came to this point.

我敢说，即使是第二遍或第三遍读这首诗,读到这儿时你们还是会感到惊讶。

耶鲁公开课 - 弥尔顿课程节选

He was surprised to see land turtles that weighed more than two hundred kilograms and were more than one meter long.

VOA: special.2009.12.16

As such, we were surprised to see the sharp sell-off in equities on Wednesday.

FORBES: Connect

Few were surprised to learn recently that the president is profiting off the Eurovision contest.

CNN: SHARE THIS

Buck and Mets manager Terry Collins acknowledged they were surprised to see Werth swing.

WSJ: Werth overanxious as Nationals lose to Mets 2-0