这二个单词的意思都是乘,可是take是动词 by是介词 举例来说吧,乘公共汽车:take a bus,take是动词,动词后可跟名词单词,坐车,肯定是take a bus, by bus,因为by是介词, by.....是借助(通过)某种工具,by bus,借助(汽车)工具, 加其他交通工具也是一样的,take a taxi/train , by train/plane/ship... ...
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有哪些结构
追答
I will take a bus to Shanghai tomorrow. I will go to Shanghai by bus tomorrow.