及物动词
1. He yawned out a good night.
他打着呵欠道晚安。
不及物动词
1. A big gap yawned between the rocks.
岩石间豁开一个大裂口。
2. He closed the book, yawned, and went to bed.
他合起书，打了个呵欠，然后上床睡觉了。
名词
1. yawn的解释
1. The play was a big yawn from start to finish.
那出戏从头至尾极其乏味。
2. He stretched himself with a yawn.
他打了个呵欠伸了伸懒腰。