couldn't放句首有难道的意思吗历史难道不如科学有趣吗？ 怎么翻译

couldn't放句首有难道的意思吗历史难道不如科学有趣吗？ 怎么翻译 看很多书上说,couldn't/mightn't have done没有虚拟的意思.那么without your help,we couldn't have finished the work so soon.中的couldn't have done难道不是虚拟吗.请详述~谢谢 couldn't be 是表示肯定的意思吗? i couldn't agree with you more. i couldn't agree with you anymore.i couldn't agree with you any more. 这三句的意思养吗? couldn`t的意思和时态 couldn‘t什么意思? I can`t stand this class any more.与I couldn`t agree more!这两个 句型的区别,难道只有语义的区别吗? We couldn't help laughing.help不是加do吗?难道laughing作动名词? couldn't help doing的问题I couldn't resist playing one last little joke on you.可以改成I couldn't help playing one last little joke on you.改了后意思一样吗? couldn't get through.中through的意思,和词性. 求：Words I Couldn't Say 这首歌的中文歌词意思. 求：Words I Couldn't Say 的中文意思. It couldn't be worse 的汉语意思 We couldnt walk around it on foot的意思 could't与couldn't的区别?这两个词都存在吗?表达的是一样的意思吗? can't与couldn't 的用法I can't give you anythingI couldn't give you anything那句是对的啊 这两句意思有不同吗? couldn't是can't的过去式吗couldn't的原型是can't吗?0 - 离问题结束还有 14 天 23 小时 couldn't的原型是can't吗?couldn't是过去式吗 couldn't have done和couldn't do的区别