The unexpected rain ruined our picnic plan.（突如其来的雨打乱了我们的野餐计划。）

His unexpected arrival surprised everyone at the party.（他的意外到来让聚会上的每个人都很惊讶。）

The team suffered an unexpected defeat in the final game.（这支队伍在决赛中遭遇了意想不到的失败。）

She received an unexpected gift from an old friend.（她收到了一位老朋友送的意想不到的礼物。）

The unexpected news spread quickly through the town.（这个意外的消息在小镇上迅速传开了。）

We had an unexpected encounter with a famous actor in the street.（我们在街上意外地遇到了一位著名演员。）

The company faced unexpected financial difficulties last year.（去年这家公司面临了意想不到的财务困难。）

The unexpected turn of events left us all speechless.（事情的意外转折让我们都无言以对。）

Her unexpected decision to quit the job shocked her colleagues.（她意外决定辞职，这让她的同事们大为震惊。）

The unexpected noise woke me up in the middle of the night.（半夜里突如其来的噪音把我吵醒了。）

They made an unexpected discovery during the archaeological dig.（他们在考古挖掘过程中有了一个意想不到的发现。）

The unexpected guest added a new element to the party.（这位不速之客给聚会增添了新的元素。）

The unexpected delay of the flight caused a lot of inconvenience.（航班的意外延误造成了很多不便。）

His unexpected kindness touched my heart deeply.（他出乎意料的善良深深地打动了我。）

The unexpected storm caused serious damage to the crops.（这场突如其来的暴风雨对庄稼造成了严重破坏。）

We had an unexpected adventure in the forest.（我们在森林里经历了一次意想不到的冒险。）

The unexpected illness forced him to cancel his travel plans.（突如其来的疾病迫使他取消了旅行计划。）

The unexpected change in the weather affected our outdoor activities.（天气的意外变化影响了我们的户外活动。）

Her unexpected performance on stage won her a lot of applause.（她在舞台上出人意料的表演赢得了很多掌声。）

The unexpected problem needed to be solved immediately.（这个意想不到的问题需要立即解决。）