Among the decisions that people make,purchasing a house is the biggest one.为什么purchasing 加in

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Amongthedecisionsthatpeoplemake,purchasingahouseisthebiggestone.为什么purchasing加inAmongthedecisionstha

Among the decisions that people make,purchasing a house is the biggest one.为什么purchasing 加in
Among the decisions that people make,purchasing a house is the biggest one.为什么purchasing 加in

Among the decisions that people make,purchasing a house is the biggest one.为什么purchasing 加in
为您提供精确解答
purchasing a house 是个动名词短语作主语.单独的谓语动词是不能作主语的.
所以加上ing,让它变为动名词.
学习宝典团队为你解答

purchasing a house买房。现在分词词组做分句的主语,故加ing。如不加的话就语法错误,purchas和is冲突。没记错的话这是状语从句吧?英语抛开好久了,有点忘了…

purchasing a house 是个动名词短语作主语,purchase是动词,作主语必须加ing,因为is也是动词,不然语法不对。