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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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.
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.

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.
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.

因为without是个介词,后面要用名词或动名词,leaving是动名词

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

without是介词

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.