If the captain had been more careful,he could have prevented

来源：学生作业帮编辑：百度作业网作业帮分类：英语作业时间：2024/07/07 18:46:15

If the captain had been more careful,he could have prevented the accident.提问!
If the captain had been more careful,he could have prevented the accident.
这句的后半句,有情态动词和现在完成时,有这种表述么?
不是手情态动词后面的动词用圆形么?为啥还能有时态的的变化?

对过去发生的事情作出与事实相反的推论,条件句用had + -ed,主句用should/ could /would have + -ed.
should/ could /would have + -ed可以表示“本来可以.,但是不是那样发生的,与事实相反;或者：“应该/可能已经...”,表示推测,不一定与事实不符.
所谓动词原形或者不定式,其实也有多种形式：do (不能用did,does）； have done （不能用had,has）；be done （被动）； be doing进行（当然不能用am ,is are,was ,were); have been doing (完成进行)

If the captain had been more careful,he could have prevented 英语翻译I could not have been more surprised if he had said the ..重要.非诚勿扰1.If he had been more careful with the details,his the rice if you had been more careful. it might have been prevented had he received the care.中had是个 If it had been for the captain,the ship would have sunk. I could not have been more surprised if he has said the same Had it not been for the doctor's careful treatment ,he could Could you have been more careful Why ,what wrong__I__? 英汉互译 If we had been given more time,we could have done it be if we had been given more time ,we could have done it better If the weather had been better,we could have had a picnic.Bu