smilingly

例句：

1. 1. She smiled happilyas she received the gift.
   她收到礼物时开心地笑了。
2. 2. The children were smilinghappily at each other.
   孩子们互相开心地笑着。
3. 3. He smiled happily and said, "I'm glad you could come."
   他开心地笑了笑，说：“很高兴你能来。”