这个是一个 祈使句 1） 祈使句有两种类型,一种是以动词原形开头,在动词原形之前加do (但只限于省略第二人称主语的句子). Take this seat. Do be careful. 否定结构： Don't move. Don't be late. 2） 第二种祈使句以let开头. Let 的反意疑问句 a.Let's 包括说话者 Let's have another try,shall we / shan't we? = Shall we have another try? b.Let us 不包括说话者 Let us have another try,will you / won't you? = Will you please let us have another try? 再问： 我知道是祈使句,怎么划?
