It seems that 似乎
It happened that 碰巧
(4) it +过去分词+从句
It is reported that 据报道
It has been proved that 已证实
3. 主语从句不可位于句首的五种情况。
(1) if 引导的主语从句不可居于复合句句首。
(2) It is said , (reported) 结构中的主语从句不可提前。
例如:
It is said that President Jingo will visit our school next week. (right)
That President Jiang will visit our school next week is said. (wrong)
(3) It happens, It occurs 结构中的主语从句不可提前。
例如:
It occurred to him that he failed in the examination. (right)
That he failed in the examination occurred to him. (wrong)
(4) It doesnt matter how/whether 结构中的主语从句不可提前。
例如:
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