Things couldn't be better.这句话为什么不说things can‘t be better.还有thing为什么要加复数

Things couldn't be better.这句话为什么不说things can‘t be better.还有thing为什么要加复数 You couldn't be more 八上英语同义词选择题( )1.She lost her memory after the accidentA. couldn’t hear things B.couldn’t see things C.couldn’t eat things D.couldn’t remember things( )2.Every time I mention going swimming,he always says he is busy. it was a good way to learn things that couldn't be easily found in life翻译 I _____ pleased when I heard your resultsA couldn't be more B couldn't have been more peking Man could什么 things but animals couldn‘t things couldn't be 我看到的是“一切顺利”的意思,但我认为不是,那个could't不是表示否定的意思吗? it couldn't be used then couldn't be prouder怎么翻译 lt couldn't be any worse I couldn't be more sure. You couldn't be more relaxed是什么意思? We have ____that we can buy ___that we couldn't buy before.A so much money,too many things.B so many money,too much things.C too much money,so many things.D very more money,too many things. They( )be polite to their parents.A should B may C maybe D couldn’t I heard they went skiing in the mountains last winter.A.may not be B.won't be C.couldn't be D.mustn't be I___pleased when I heard about your results-congratulations!A.couldn't be moreB.couldn't have been more为什么是B, I__pleased when I heard about your results---congratulations!A.couldn't be moreB.couldn't have been more为什么选B,谢谢! could,would...there are many things we couldn`t predict.这里的could代表什么,为什么不用“can” cherish what you have now and things would be better .这里的would 又代表什么?为什么不用 will