“开心”别只会用''''Happy''''，这里有更高级的表达！

兴高采烈的；开心的

Cheerful

She was always cheerful. 

她每天都是开开心心的

心情轻松的；愉快的

Light-hearted

That was a light-hearted conversation. 

那真是一次开心愉快的谈话

发自内心的开心

Pleased 

I was pleased to hear you've been promoted.

听说你升职啦，真为你开心！

礼貌的表达愉快

Glad

We're glad to help you.

我们很高兴能帮您

We're glad you are our customer.

很高兴为您服务。