If I had worked harder at school,I -----in a comfortable office now.A.would sit B.would have sat C.would be sitting D.were sitting正确答案是C 为什么呢啊?这不是对过去的虚拟吗?be 不是应该用been

If I had worked hard at school,I would be an engineer,too.与If I had worked hard at school,IIf I had worked hard at school,I would be an engineer,too.与If I had worked hard at school,I would have been an engineer,too.求教两者之间语气的区 If I had worked hard at school,I would be an engineer,too.与If I had worked hard at school,I would have been an engineer,too.求教两者之间语气的区别两者意思是一样的吗 if i had worked hard,i would have succeed这个虚拟语气句改为分词作状语怎么改?是working hard ,i would have succeed还是worked hard,i would have succeed还是没有这种说法? I worked hard if i ...at school,i would be sitting in a comfortable office now这里填的是worked harder 可不可以填had been working hard呢? ___ he would have succeeded in the examinations.A If he has worked hard B If he works hard C If he worked hard D Had he worked hard 选什么?为什么? Dr Bethune worked hard as if he ______.Dr Bethune worked hard as if he ______.a.never had felt tired b.had never felt tired c.never felt tired d .was tired never 虚拟语气,与过去事实相反,用什么?If I had worked hard at school,I _____ an engineer,too.A.would be B.would have been选哪个,为什么呢? 虚拟语态问题If he had worked hard,he (would have succeeded)为什么不能用would succeed? if he had worked hard at high school ,he would be a college student like you today 为什么是would be不是had been maybe i worked very very hard. maybe i worked very very hard. i worked so hard to find you . 请分别解释以下、从句、主句在虚拟语气中的时态　If I had worked hard at school,I would be an engineer,too.　　如果我在学校学习刻苦的话,我现在也会成为一个工程师了 　　If they had informed us,we would n I wish I had worked harder是什么意思 if a had a chance ,i would have worked hard这句 话是过去时的虚拟语气吗与过去事实相反的虚拟语气应该是:If从句的谓语动词had+p.p.主句的谓语动词would/should+have +p.p.而这句不是啊 i remember that you work hard 还是worked hard,为什么? 14.____B___ at his paper over the weekend,Neil didn't finish it.A.As he worked hard B.Hard as he worked C.How he worked hard D.How hard he worked 16.That was ____D___ matter that I had no choice but to talk it over with my parents.A.a such serious B.