anxious 
英 [ˈæŋkʃəs]  美 [ˈæŋkʃəs] 
adj. （令人）焦虑的；挂念的；渴望的

例句：
I'm very anxious about you. 

你让我非常焦虑。

I get anxious about possibly missing the train. 

一想到有可能错过火车我就变得焦虑不安。

He denied that he was anxious about the outcome of tomorrow's vote. 

他说自己并不为明天的投票结果感到紧张。

As the hours went by, those waiting at home grew more and more anxious. 

随着时间一小时一小时地过去，那些在家等待的人们变得越来越焦虑。

It was obvious from her anxious expression that he had not come home yet. 

从她焦虑的表情看来他显然还未回家。