He looked depressed,even suicidal.

他看上去很沮丧,甚至于沮丧到想自杀。

He was really depressed about the business last week, but he’s all smiles now.A very big order has just come in.

上个星期他还为生意愁眉苦脸的,可是现在卻喜形于色,因为刚接到一笔大订单。

He was so depressed about his debts that he wanted to blow his brains out.

他为债务烦恼不已,恨不得一枪把自己结果了。