英语中祈使句的标志是什么?
问题描述：
英语中祈使句的标志是什么?
答
动词原形开头，很好记的
答
祈使句一般都是以动词直接开头，可能在前面还有个please之类的词。
如：Open the door.
答
Generally speaking,the verb is placed in the beginning of a sentence.
答
I known.
But I don't known how to choose the right answer in my exercise.
- =!