关于虚拟语气的两个句子分析I had though about arguing with the teacher about that,but I didn't have enough courage.I had thought about living with my grandparents when my parents went abroad.这两个句子也不是条件句啊,里面使用虚拟语气怎么解释呢.意思我懂,请高手从语法角度帮忙分析.还有下面这个：You should have studied much harder.语法该怎么解释呢?虚拟语气的五种用法种并不见这三个句子啊.
问题描述：
关于虚拟语气的两个句子分析
I had though about arguing with the teacher about that,but I didn't have enough courage.
I had thought about living with my grandparents when my parents went abroad.
这两个句子也不是条件句啊,里面使用虚拟语气怎么解释呢.意思我懂,请高手从语法角度帮忙分析.
还有下面这个：You should have studied much harder.语法该怎么解释呢?虚拟语气的五种用法种并不见这三个句子啊.
答
had thought 表示本来想,本来打算,但没有做到．是动词用过去完成时表示虚拟的一种形式．
should have done 表示本来应该做而没有做．
shouldn't have done 本来不应该做而做了