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learning english well will take us a lot of time,反意部分用doesn't it?还是won't it?为何?learning english well will take us a lot of time,反意部分用doesn't it?还是won't it?为何?

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learning english well will take us a lot of time,反意部分用doesn't it?还是won't it?为何?
learning english well will take us a lot of time,反意部分用doesn't it?还是won't it?为何?
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won't it
it 指代的是主语 learning english,因为谓语时态是一般将来时 will take,所以否定时用won't