have had has这三个单词中文意思都是“拥有（表示一种状态）”的意思，但英文上用法有些区别，具体如下：1.在英语句子中，若句子的时态是一般现在时，则have/has适用于这种情况下，其中当主语是第一人称，第二人称，第三...
与现在事实相反 Should\would\could\might+do(动词原形) 过去式(be动词各人称都用were) If I were you, I should \would make full use of my time to study. 与过去事实相反 Should\would\could\might+have done(动词过去分词)...
(过去完成时had done也包括在内)。 例:1、主动:We have studied English for 3 years off and on at the spare-time school. 被动:English has been studied for 3 years by us off and on at the spare-time school. (...
If I were at home now. 要是我现在在家里该多好啊。 If only I had got it. 要是只有我得到它了该多好啊。 8.注意,在虚拟语气的从句中,动词be的过去时态一律用were,不用was。 eg:If I were you,I would go to look...
(month 等)+that 从句(that 可省)时,疑问部分与主句的主语和谓语保持一致 .如:This is the third time he has left home, isn't it? Tomorrow will be the second time that I have had to have my TV set repaired again...
⒊ would (had)rather , would sooner也用来表达主观愿望,它们之后的宾语从句中需用虚拟语气。谓语动词用过去式表示现在或将来,用过去完成式表示与过去事实相反,例如:I would rather he went right now. Ⅲ其他形式的虚拟语气 ⒈ it ...
1)hardly, scarcely, barely + 过去完成时+ when + 过去时。例如: Hardly had I got on the bus when it started to move. 2)no sooner +过去完成时+ than +过去时。例如: No sooner had I gone out than he came to ...
( By the time he came, I had left. )二.一般过去时态(did式):1.基本用法:1〕表示过去经常性或习惯性的动作,e.g.We often played together when we were children.注:表示过去习惯性的动作,可用would, used to, e.g.He...
1. 语气强度不同："barely"表示程度非常接近底线，但并不达到底线以上；而"hardly"则更强调事情已经接近底线，甚至已经达到底线。例句：a. I barely made it to the meeting on time.我勉强及时赶到会议现场。b. She ...
16个时态中,常用的有12个:一般现在时、一般过去时、一般将来时、过去将来时、现在进行时、过去进行时、将来进行时、现在完成时、过去完成时、将来完成时、现在完成进行时和过去完成进行时。其他时态很少单独使用. 1、一般现在时 通常以...