睡半个小时可以用英文表示为 "sleep for half an hour"。其中 "sleep" 是动词,表示睡觉的意思,"for" 是介词,表示某个时间段,"half an hour" 是名词短语,表示半小时。
一些例句:
I'm going to sleep for half an hour before I start my work.(我要睡半个小时后再开始工作。)
She usually sleeps for half an hour in the afternoon to recharge.(她通常下午睡半个小时来恢复精力。)
He slept for half an hour on the plane and felt much better.(他在飞机上睡了半个小时,感觉好多了。)