His bad health gives some cause for concern.他的健康令人担忧。

今天的几个句子还是有关表达担忧的：1.I'm worried sick by his health.我很担心他的健康。2. I must say that news disquieted me a great deal.我必须承认，那个消息使我深感不安。3.I shiver to the idea that he would get into trouble.他将陷入困境的消息使我不寒而栗。4.I'm really in a flap.我真的慌极了.