dà jiā / wán de / zhèng / kāi xīn / tā / tū rán / tí qǐ / kǎo shì / de / shì / zhēn shi / dà shā fēng jǐng

大家玩得正开心，他突然提起考试的事，真是大杀风景。

Everyone was having fun, but he suddenly brought up the exam, which really spoiled the mood.