请问下面句子中的by是什么词性?在句子干什么成分?能否去掉?
Insteadof using light to see by, telephone researchers are thinking of way to uselight to communicate by.
这里的 by是介词,表示“借用”,与 light 搭配。 to see by 和 to communicate by都是动词不定式短语作定语,修饰light。
请问下面句子中的by是什么词性?在句子干什么成分?能否去掉?
Insteadof using light to see by, telephone researchers are thinking of way to uselight to communicate by.
这里的 by是介词,表示“借用”,与 light 搭配。 to see by 和 to communicate by都是动词不定式短语作定语,修饰light。
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