vi. & vt.打呵欠 take a deep breath with the mouth wide open as sleepy or bored

　～ a reply　打着呵欠回答
　～ drowsily　昏昏欲睡地打着呵欠
　～ ferociously　使劲地打着呵欠
　～ furtively〔secretly〕　偷偷地打着呵欠
　～ heavily　深深地打呵欠
　～ lazily　懒惰地打着呵欠
　～ loudly　大声打呵欠
　～ prodigiously　惊人地打着呵欠
　～ publicly　在众人面前打呵欠
　～ widely　嘴张得大大地打呵欠
　～ out　打着呵欠说
　～ for　为…张大嘴
　～ over　在…时打呵欠

　He yawned and fell asleep.　他打着呵欠睡着了。
　He yawned heavily.　他打了个大呵欠。
　She yawned during the lecture.　她听讲座时一直在打呵欠。
　The hole yawned before him.　他面前有个豁开的洞口。
　A great gap yawned between the rocks.　在岩石间有个大豁口。
　The boy yawned a reply.　那个男孩打着呵欠回答。

　yawn　也可用作名词，意思是“呵欠”“乏味〔枯燥〕的事物”。例如：
　His yawns suggested he was either tired or bored.　他呵欠连天说明他不是疲倦，就是厌倦了。

　［词源］古英语gionian（打呵欠）