can't have 老师只说了词组，没给句子。

can't have 老师只说了词组，没给句子。 关于can't have been的句子我写的I can't have eaten为什么是错的老师说非要写成I can't have been eatting Would you like anything else?Have you ever said something you don't want to say?我记得老师说第二个句子这种是词组,所以something不换anything,但是第一个句子也是词组啊? You can`t imagine what difficuitly we had______ home in snowstorm.A.walked B.walk C.to walk D.walking老师说用have difficulty doing sth的语法,故选D 可我看见句子要求用的语法中没按照顺序来,我的意思是 have difficulty doin ---did he have clean the blackboard?sorry i don't knowAwayBwhatCwhereDwhen为什么cd不对?老师说史因为have后面加了原型,那这个have怎么解释 有关情态动词表推测的问题例1：Conserding his ability and experience,he ____ better.A.can have doneB.might have done应该选B,老师说没有can have done,因为can表能力时有时态区别,所以只有could have done,但有can't have 有关情态动词表推测的问题例1：Conserding his ability and experience,he ____ better.A.can have doneB.might have done应该选B,老师说没有can have done,因为can表能力时有时态区别,所以只有could have done,但有can't have can’t +have done can’t / couldn’t have I could have said it myself.我本来可以自己说的（但是没说） I couldn't have said it myself.到底是说了还是没说. can be ,must be的区别 我们先老师告诉我们must be表主观,can be表客观,可后来老师又说到其它几个词组就把我们都说晕了,按她后来说的就是must be表客观,can be表主观……网上有的说must be表客观,can Can't reach to your 我已经没分了. 不过老师发给了我们 但是没说什么 五年级英语作文：I can……五句就行了题目（中文的）：我能做……注：老师没说 为什么平行线分线段所截得线段成比例?老师只说了推导,没证明.谁帮我证明,不要用相似三角形来说 为什么平行线分线段所截得线段成比例?老师只说了推导,没证明.谁帮我证明,不要用相似三角形来说 雅思口语只说了几个词组怎么办 拿多少分? 英语语法：she has kicked me 和 he is kidding me 中 很多文献出现了简化has is成 she's he's请问在正规文体中这样写作可以吗 学校的教育没说这种简化 只叫了 can't what's 什么的如果我写作文或者论文什