高二英语浏览it的句型内容摘要:
e , high time ) that ... 该句型中 that 后的从句应该用虚拟语气,值得注意的是① 常用过去时态表示虚拟.② 有时也用 should + 动词原形, should 不能省。 常译为“是(正是) …… 的时侯 …… ”。 It is time that children should go to bed. = It is time that children went to bed. 9. It is the first ( second … ) time that … 该句型要和上一个句型区别开来。 该句型中的 that 从句不用虚拟语气,而用完成时态。 至于用什么完成时态,由主句的谓语动词的时态决定。 如果是一般现在时,后面从句用现在完成时态;如果是一般过去时,后面从句则用过去完成时态。 该结构中 that 可以省去; it 有时用 this 替换,常译为“是第一(二) …… 次 …… ”。 It is the first time I have been here. = This is the first time I have been here. 10. It is … since ... 该句型主要用作处理瞬间动词的完成时,又要和表示一段时间的时间状语连用的问题。 主句中是时间作表语,其时态是现在时或完成时, since 引导的从句通常是一般过去时态,而且是瞬间动词。 如果主句是一般过去时,从句则用过去完成时。 It is ( has been ) 5 years since his father died. 11. It is ... when ... 该句型中的 when 引导的是一个时间状语从句,主句中的 it 指时间,表语由具体的时间充当。 常译为“当 …… 的时候,是 …… ”。 It was 5 o39。 clock when he came here. 12. It be ... before ... 该句型主句中的 it 指时间 , 主句中的时态常是将来一般时或过去时两种时态.主句中的表语多是 long, not long , 3 days , 2 weeks 等表示时间段的词或短语。 常译为“ …… 之后 …… ”。 It was 3 days before he went to Beijing. It will be not long before he finishes his job. 1。高二英语浏览it的句型
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