as if引导的虚拟句是否遵循时态倒退原则呢?He talks about Rome as if he had been there before如何解释
问题描述：
as if引导的虚拟句是否遵循时态倒退原则呢?He talks about Rome as if he had been there before如何解释
答
as if 一般来说是遵循倒退原则的.但请具体结合虚拟时态部分来学习.
楼主是不明白为什么用had been吗?那你觉得应该用什么?
如果看不出来我们可以先还原.比如它是一个一般的句子.
He talks about Rome,because he has been there before.
这句应该没问题吧,表示以前去过.那现在的谈话其实是对过去事件的虚拟,相应的就是had been.
这也是高中英语常考的题型：主句和从句时态不一致.要根据说话的时间所指和内容来判断.并不是一个句子只能有一种时态.
as if 句型最重要的是掌握如：he speaks french,as if he were a frenchman.这类的句型.