He's half asleep and a bit boozed.

他半醒半睡，还有点微醉。

The fisherman was half asleep, but the thought frightened him so much that he started and fell out of bed.

渔夫已经半睡半醒了，但这个想法把他吓一跳，他从床上摔了下来。

While he was half asleep, he seemed to hear a knock on the door.

蒙胧中他仿佛听到有人敲门。

He was rude, I was half asleep.

他很粗鲁，我半睡半醒的。