在我和朋友们踢足球的时候我感觉很开心。

I feel happy when I play soccer with my friends.

天天开心如我，自自在在如风，轻轻摇摆！

Shake your body like me if you feel happy?

我们在萨拉的聚会上玩得很开心。

We had a lot of fun at Sarah's party.

这些年来我们过得很开心。

We've had a lot of fun over the years.

“真开心呀！”她笑着说。

'What fun!' she said with a laugh.

她给劳拉出了一些主意，好逗这对双胞胎开心。

She suggested several ideas to help Laura amuse the twins.

总的说来，我在学校很开心。

By and large, I enjoyed my time at school.

你瞧着吧，我们会很开心的。

We'll have a great time, you'll see.

见他们都玩得很开心，他非常高兴。

It gladdened him to see them all enjoying themselves.

孩子们追逐着彼此的影子，玩得很开心。

The children were having fun, chasing each other's shadows.

看他好像吃了一惊，她感到开心。

She had the pleasure of seeing him look surprised.

知道有人欣赏我所做的事真让人开心。

It's nice to know that somebody appreciates what I do.

我没有察觉到原来他那时非常不开心。

I didn't realize but he was deeply unhappy at that time.