could been
在英语里coms been、must been和may been和come have been...
你说的应该是can/could be、must be、may/might have been、must have been can/could be：表猜测，可能 must be:一定 may/might be：可能，语气比can/could弱 must...
情态动词should和could的用法
been working instant of resting。我本应该工作儿不是休息。should=应该,could=能够,例句...Icouldhavehelphim,butshouldI?我能帮到他,但我该帮吗?请采纳谢谢
怎么理解这个句子里的 could be seen 用被动?
My wallet hasbeen stolen. 不知道【doer】是谁 3、在时间碎片化的背景下，码字的我不易，阅读至此的您更是难得。【赞同/upvote/thumb up】...之所以用被动"he could be seen {by people}"而非"people could see him"，作者要表达的并非他人能够或可能看到的事实(could表示能力或可能)，...
could 的用法
很简单，could 是情态动词的标志，后面只能加动词原形，要加be动词的话，只能加be,不能加been,being,could +动词原形could是can的过去式，表示能会的意思could比can语气...
would have been与could have been分别是什么意思?
would have been与could have been都是虚拟语气中用来表示与过去事实相反的情况的表达方式。would have been：主要用法：表示对过去某种情况的假设或推测，强调事情在实际上...
情态动词could may might都是表委婉请求,有什么区别...
"Might" 表示某事有可能发生或是存在，但它的程度比 "may" 和 "could" 要低。例如：I might go to the party tonight.（我今晚可能会去...Answer: MayI ___ have been wrong about the time of the movie.Answer: mayShe ___ have left her wallet at the restaurant.Answer:...
英语:Could () have been ( )who helped Sunny get...
Anwer:此句是一个强调句构"It" was "they" who helped Sunny get her work done.可以看出用"it","they"一目了然.去掉"It was ...who"这个强调框架,原句为They...
it could be worse怎么翻译?
"it could be worse" is an expression used to acknowledge a situation that may not be ideal, but implies that it could have been ...
couldhavebeen与wouldhavebeen有什么区别?
“could have + 过去分词”强调过去有执行某事的能力但并未执行。“would have + 过去分词”强调意愿或可能性，通常与“if”条件句连用。例如：“I could have been ...
might have been 和 cound have been的区别
might have been 有可能做 过什么，但是不确定 could have been 除了可能性，还可以表示本可以做什么，结果没有做 其实