1. The existence of oil wells“ has” been known for a long ti

1. The existence of oil wells“ has” been known for a long time. 为什么用has 而不用have
请问为什么用has 而不用have

小太极迷 1年前已收到3个回答举报

RP7749 幼苗

共回答了13个问题采纳率：84.6% 举报

The existence of oil wells“油井的存在”是一个整体,做主语,且“存在一词不可数.”

1年前

uumasa 幼苗

共回答了289个问题举报

The existence of oil wells 作主语油井的存在是单数概念

1年前

xxxx030 幼苗

共回答了2个问题举报

因为主语是油井的存在而不是那些油井
存在existence 要用has
如果主语是oil wells 那么要用have

1年前

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