for twice as long as的用法

During that time the districts that stayed closed longest forced all or some of their children to learn remotely for twice as long as schools in Ireland.

这里for是什么成分？去掉可以嘛？

Indians are the world's biggest book worms, reading on average 10.7 hours a week, twice as long as Americans, according to a new survey.

这里为啥没有for？

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分类：数词用法

最佳答案 2022-12-15 11:27

for twice as long as schools in Ireland为介词短语作to learn的时间状语。twice as long as Americans为形容词短语，作10.7 hours a week的非限制性定语。

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曹荣禄 -

擅长：动词用法,句法问题 | 采纳率 82% | 回答于 2022-05-12 22:00

for twice as long as的用法

最佳答案 2022-12-15 11:27

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