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题目
Can you explain how it came about that you were an hour late
哪位高手能帮我解释下这句话是什么从句,分析下哈,

提问时间:2020-07-27

答案
how引导宾语从句.作为explain的宾语.
it...that属于虚拟主语,you were an hour late也算是主语从句.
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