In English, the subject NP of an imperative sentence can be deleted.
在英语中，这个主题党的祈使句可以删除。
The Q-imperative sentence comprises an interrogative form which is inserted in an imperative form, and functions both as an interrogative sentence and as an imperative sentence.
由一个祈使形式和一个疑问形式嵌合而成，表达祈使、疑问两种功能。
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