The noise, the buildings, the people, came as a revelation.

They were horrified at this unexpected turn of events.

The announcement was not entirely unexpected.

On the day of the match the team turned up trumps.

The news may be unexpected； nevertheless, it is true.

意料之外、超乎想象、又惊又喜、始料不及、丈二和尚摸不着头脑

一鸣惊人

surprise

深感意外

意想不到

喜出望外

出人意料

喜从天降

出其不意

不可思议

不期而遇

愕然

骇然

哗然

横发逆起

猝不及防

突如其来

不期而然

措手不及

出人意表

这些短语涵盖了各种出乎意料的情况和情感，从惊讶到喜悦，从震惊到无奈，都可以用这些短语来表达。希望这些对你有所帮助!