作业帮Having been in high school for a whole month.请问这句话为什么开头用havi
来源：学生作业帮 编辑：作业帮 分类：英语作业 时间：2024/05/05 15:23:59
Having been in high school for a whole month.请问这句话为什么开头用having been?是什么语法知识?
这不是一个句子,而是句子的修饰语.后面还有其他信息才对.这是doing结构的完成时（现在分词或动名词）,表示动作发生在谓语动词之前.
再问： 后面是逗号啊 ，是其他接着的内容，为什么用having been
再答： 上面我说了，having done表示这个动作发生在你说的那个后面的内容中的谓语之前的动作。比如: Having failed many times, he gave up. 注意翻译： 之前失败过多次，他放弃了。（注意，having failed...这个动作发生在gave up之前，且强调动作先后。）
再问： 你的意思明白了，这里的分词是表示主动，进行吗？如果不用分词 还可以用什么？
再答： 当然是表示主动，因为能在高中待一个月的只能是人，人才能待就是主动。这里不是进行时，是be+介词短语，表示状态,比如：be at school, be at home, be in hospital.... 前面的having done刚才我讲过了。
再问： 后面是逗号啊 ，是其他接着的内容，为什么用having been
再答： 上面我说了，having done表示这个动作发生在你说的那个后面的内容中的谓语之前的动作。比如: Having failed many times, he gave up. 注意翻译： 之前失败过多次，他放弃了。（注意，having failed...这个动作发生在gave up之前，且强调动作先后。）
再问： 你的意思明白了，这里的分词是表示主动，进行吗？如果不用分词 还可以用什么？
再答： 当然是表示主动，因为能在高中待一个月的只能是人，人才能待就是主动。这里不是进行时，是be+介词短语，表示状态,比如：be at school, be at home, be in hospital.... 前面的having done刚才我讲过了。
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