leave为什么加ing 形式At some fast food restaurants,people can order their food,pay for it and eat it without leaving their cars.
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without是介词 后面要加名词性质的词 leave是动词 所以要把它变成动名词 也就是加ing 所以是leaving
without 后的动词都应做此变化.
======以下答案可供参考======
供参考答案1:
因为without是个介词，后面要用名词或动名词，leaving是动名词
供参考答案2:
without 后面要加名词, 所以动词也要变成动名词
leave的动名词是leaving
供参考答案3:
without是介词
供参考答案4:
因为without+v.ing(动名词）是固定句式
另外without 还可以＋n.名词，人称代词
例如：I can't eat it without tomato.
I can't live without you.