Having finished the experiment ,he left the lab .这里的have为什么要是having

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Having finished the experiment ,he left the lab .这里的have为什么要是having
Having finished the experiment ,he left the lab .这里的have为什么要是having

Having finished the experiment ,he left the lab .这里的have为什么要是having
伴随语态,所以不能直接用have,用have之前必须要有主语,后面的分句前需要有连词and\

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作状语
不可能用have远行吧，因为主语在后面
不能用had，因为分句和主句不是被动关系
1)分词作状语分词在句子中作状语，可以表示时间、条件、原因、结果、让步、伴随等。分
词做状语时，它的逻辑主语与句子的主语一致。作状语的分词相当于一个状语从句。
过去分词表示“被动和
完成”(不及物动词的过去分词不表示被动，只表示完成)。分词可以有自己的状语、宾语或逻辑
主语等。
分词在句子中作状语，使用何种分词，要取决于分词与句子主语的关系：主谓关系用现在分
词，动宾或被动关系用过去分词。3)分词作定语分词作定语时，单个的分词通常放在被修饰的名词之前，分词短语一般置于所
修饰的中心词后面。现在分词修饰的是发出该动作的名词(即与名词有主谓关系)，过去分词修饰
承受该动作的名词(即与名词是动宾关系)。
4)分词作宾语补足语现在分词在see, watch, hear, observe, notice, feel, find,
glimpse, glance等感官动词和look at, listen to等短语动词以及have, keep, get, catch,
leave, set, start, send等使役动词后面与名词或代词构成复合宾语，作宾语补语的成分。

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