关于英语主语的单复数就是问一个知识点例如：Five dollars is enough.为什么这里five dollar

Five dollars (be)enough. Five dollars ( ) enough for us there are five dollars 为什么是are 但是five dollars 后面是is twenty-five dollars, 这里的短横线是不是必须的 five thousand dollar这里面的thousand和dollar都不用加s么? 关于主谓一致的问题谓语动词用单数还是复数,要考虑主语表达的含义是单数还是复数,例如20 dollars is too d How much ___ the shoes?–Five dollars ___ enough.A.is/is B.ar five million dollars ___ enough to buy a new car .A.are B.is five pounds is/are enough The hat is five dollars 的同义句 5 dollars is enough 为什么用is dollars 是复数啊 five dollar words