例:Please open the door. 请打开门。 Don't be late next time. 下次别迟到。 Don't run on the train. 不要在火车上跑。 Let's go to school. 让我们去上学。 祈使句含义:1. 表请求 Pass me the sugar, please. 请把糖递给我。2. 表命令 Put up your hands. 举手。 Fill in this ...