当她进来时，他马上喜笑颜开。 2. be extremely delighted 欢天喜地 The children are extremely delighted when Christmas comes.
圣诞节来临的时候，孩子们欢天喜地的。 3. be wild with joy 惊喜若狂 The crowd was wild with joy when he scored the final goal.
当他投入最后一球得分时，人们惊喜若狂。 4. be ecstatic欣喜若狂 We were ecstatic to be together again.
能重新相聚，我们真是欣喜若狂。 5. be exuberant 无比开心 The children could not have been any more exuberant at the birthday party.
孩子们在生日聚会上真是无比开心。 6. wear a happy expression面带笑容 He was wearing a happy expression even though he was really worried.
即使他很担心，他也总是面带笑容。 7. look cheerful 面带喜色 You look cheerful today. What's the good news?
你今天看上去很高兴。有什么好事？