讲解文本：

yawn 哈欠，打哈欠

He closed the book, yawned, and went to bed.

他合上书，打了个哈欠，然后上床。

She got up from the chair with a big loud yawn.

她从椅子上站了起来，打个大大的哈欠。

疯狂练习吧!