supper是可數名詞嗎

　　After supper he'd put his feet up and read.

　　晚餐后他會放松休息一下，讀點什么。

　　Supper is from 5:00 to 6:00 in the evening.

　　晚餐是在傍晚5至6點間。

　　Rennie had eaten his supper in the canteen.

　　倫尼已在食堂吃過晚飯。