couldn+t+have
初一英语 根据首字母提示完成所缺单词
but he c（ouldn’t） find it. The conductor knew him. So she said，“S（how） me your ticket on your way back home. And if you can’t find it， it doesn’t matter.” “Oh，
帮我看一下有没有语法错误
貌似有难度
周末了,孩子们非常喜欢逛超市,请根据超市的情景进行英文回答,是写一段...
I went hiking to a mountain with my frie nds last summer.It was a good trip at the beginning but s omething unexpected happened on the half way. One of my friends suddenly fel t a terrible pain in his stomach and he c ouldn‘t move any further. Nobody knew what to do...
根据所给首字母提示完成短文所缺单词 (回答得好的话追加哦!)
One day ,the American w(ho ) Mark Twin went to a city b(y ) train. He wanted to see a friend of h(is ). He was a very busy man and he often f(ind ) something.When he was in the train,the conductor asked him to show his t(icket ).Mark Twin looked for it h...
天全县善亭回答： 1.should/ought to have done的含义. “should/ought to have+过去分词”表示“过去应该做谋事却没有做”; “should not/ought not to have+过去分词”表示“作了不应该做的事”.含有责备或遗憾的意思.例如: You shouldn't /oughtn't to ...
井容15532569347问： can have done的用法 - ？
天全县善亭回答： ＂can have done＂是一种情态动词的过去完成时,表示过去某个时间点或动作之前已经完成的动作.它是由“can”和“have done”两部分组成的.其中,“can”是情态动词,表示能力或许可;而“have done”是现在完成时的构成形式,表示过去某个时间点或动作之前已经完成的动作 .例如:- By the time I arrived, he could have finished his work.(到我到达的时候,他可能已经完成了他的工作.)- She can have left already.(她可能已经离开了.)
井容15532569347问： could have - ？
天全县善亭回答： 1.could have done的意思是“本可以做某事(而实际上没做)”.句型:Sb could have done sth, but + 一般过去时.的意思为:某人本可以做某事的,但(实际情况是)…….由于后句讲述的是真实情况,故用一般过去时. 我乱弄个句子:You ...
井容15532569347问： 究竟can't have done与could't have done有什麽分别? - ？
天全县善亭回答： can现在,could过去(如果指现在可以表示委婉的口气) 现在与过去的分别;可能性较大和较小的分别---都对 1 如果不是用于虚拟语气,即,不是讨论与实际情况相反的情形,而是表示推测,可以用could/might/can/may/ must (可能性由小到大...
井容15532569347问： could/can have done在肯定句都可以翻译成什么,在否定句中都可以翻译成什么?请给个例子,简要说明下 - ？
天全县善亭回答： could have done表肯定时,用在虚拟语气中,意思是”可能已经...“ 过去完成时,表示过去本能做完却又未做完的事,如:If you had helped, I could have finished the work.意思:你要是帮了我,我可能已经完成工作了.can have done 则不能用于肯定句中,一般用于疑问句和否定句中,如:Can they have passed the exam? 难道他们真通过考试了? He can't have been to the city. 他不可能去过那个城市.
井容15532569347问： couldn't be+形容词与couldn't have been的区别 - ？
天全县善亭回答： couldn't have been是虚拟语气
井容15532569347问： 急could have been doing sth有没有可能翻译成“可能是在做...”? - ？
天全县善亭回答： 我读完了你整个句子,如果单从＂could have been doing sth＂这句话来判断,是不知道什么意思的..首先你先要知道“could+have+过去分词”的10种用法:一、表示主观猜测 即对已经发生动作或已经存在的状态作出主观上的猜测,通常可译...
井容15532569347问： mustn't have done和can't have done的区别最好有例子 - ？
天全县善亭回答： 1. 情态动词must+have done只用于肯定句中,表示对过去发生的事情或状态进行肯定的推测,意为”过去一定做过某事”.如:1)It must have rained last night,for the road is all wet.昨天晚上一定是下雨了,因为路还湿着. 2. 情态动词can/could...
井容15532569347问： could have done的各种用法(在肯定句,否定句,疑问句中) - ？
天全县善亭回答： “could+have+done”是虚拟语气,表示对过去事情的假设,意思是本来能够做某事而没有做. He could have passed the exam, but he was too careless. 本来他能够通过考试,但是他太粗心疑问句:①Could you have done the exercises?你可能做完练习吗? 否定句②They couldn't have finished the work so soon.他们不可能这么快就做完了.
井容15532569347问： must+have done 句型 - ？
天全县善亭回答： 不能用must be done的形式.因为must have done强调的是动作已经完成. can't和couldn't是可以通用的,但是后者的语气较委婉.
