1. He undressed himself and went to bed.
    他脱了衣服就去睡觉了。

2. Her husband, already half undressed, asked:
    她丈夫的衣服已经脱了一半，问道：

3. "Well, I hope the clock won´t stop in the night," Easton said as he undressed.
    “好吧，但愿半夜里钟可别停了，”伊斯顿边脱衣服边说。