英语中关于“开心”的表达多数会用到up或者high、air等词表示：
The news lifted her spirits.
这个消息让她精神了起来。
Things are looking up.
情况开始好转。
Cheer up!
振作起来!
My spirits rose when I got her letter.
收到她的信，我就开心了。
I've been walking/floating on air ever since.
自那以后，我就像行走在云端一样开心。
I was over the moon when they told me the news.
他们告诉我那个消息时，我乐不可支。
I felt as high as a kite.
我高兴极了。
She's on top of the world/on cloud nine.
她非常高兴。
英语中关于“不开心”的表达则多用low或者sink等词：
I feel really down/low about it all.
我对此感到非常失望。
He's in very low spirits.
他情绪十分低落。
He's in the depths of despair.
他失望透顶。
My heart sank when I saw him.
我看到他时心情一下子变得沉重。
They looked very down in the mouth/down in the dumps.
他们看上去闷闷不乐。
英语中表示良好的情绪时，常常会用light或者bright等词：
The future looks very bright/rosy.
未来是光明的。
She brightened up when she heard the news.
她听到那个消息就开心了起来。
His face lit up when he saw them.
他看到他们，面露喜色。
They had shining eyes and beaming/dazzling smiles.
他们眼眸明亮，笑容洋溢。
The bride looked radiant.
新娘子看起来光彩照人。
You have to look for the light at the end of the tunnel.
你要在前进途中寻找隧道尽头的曙光。
英语中表示情绪不好的时候，经常会出现black、blue以及dark等词：
He was in a black mood.
他情绪不好。
I was feeling blue.
我心情不好。
There's no point in having these dark thoughts.
总想这些负面的事情没有意义。
His face darkened.
他的脸沉了下来。
They led a grey empty existence.
他们生存状况窘迫。
I'm afraid the outlook is very gloomy/bleak/dismal.
恐怕前景并不乐观。
The news cast a shadow over the evening.
那个消息让整个晚上都笼罩在阴霾中。
