令我惊讶的是，她开始笑了。

To my ___astonishment, she started laughing.

她惊讶地倒吸了一口气。

She gasped in ___astonishment.

令我们惊讶的是，我们在一座似乎建于几个世纪前的小房子前。

To our ___astonishment, we were in front of a small house which seemed to have been built centuries ago.