突然是副词词性的词，英语为suddenly例句1.They suddenly became aware of people looking at them.他们突然意识到有些人在瞧着他们。

2.Suddenly it clicked ─ we'd been talking about different people.我们突然领悟到原来我们谈论的不是同一个人。3.It suddenly struck me how we could improve the situation.我一下子明白我们如何能改善局面了。