4年是four hundred 还是four hundreds?不好意思打错了是4百

4年是four hundred 还是four hundreds?不好意思打错了是4百 four hundred thousand 这是4万还是4千?30万 用英语怎么说?那4万是什么？ USD19405.84 的英文到底是NINETEEN THOUSANDS FOUR HUNDREDS AND FIVE POINT EIGHT FOUR DOLLARS还是 NINETEEN THOUSAND FOUR HUNDRED AND FIVE POINT EIGHT FOUR DOLLARS “450年”和“1600年”的英语读法是什么?450年是读成“FOUR HUNDRED AND FIFTY”还是别的什么的?那1600年又是怎么个读法呢? 是two hundred还是two-hundred 这个数字的英语读法95400是读ninety-five thousand and four hundred还是无and?为什么 英语中数字的读法325,500,470 是读成：three hundred and twenty-five,five hundred and four hundred and seventy还是three hundred and twenty-five,five hundred,four hundred and seventy a hundred 序数词网上乱七八糟的 跪求高手指导（一定要是准确的!）① a hundred 的序数词 是the hundredth 还是 the one hundredth 还是the a hundredth 还是hundredth② 另外 two hundred // three hundred // four hundred. 用英语写数字时,每3位要加逗号吗比如5,237,166,234是 five billion,two hundred and thirty-seven million,one hundred and sixty-six thousand,two hundred and thirty-four 还是 five billion two hundred and thirty-seven million one hundred a 请问是one hundred pound 还是one hundred pounds? 请教英语读音：Room402是读Room four zero two还是Room four hundred and two?38Hill Road是读thirty eight Hill Road还是three eight Hill Road? 123456789英文表示123456789 one billion twenty-three million four hundred fifty-six thousand seven hundred and eighty-nine 123456789 one hundred and twenty-three million,four hundred and fifty-six thousand,seven hundred and eighty-nine 到底是 one hundred and forty-four ( )+sixty-four=two hundred one hundred后面有of么?是one hundred 还是a hundred? 在英语中,1600年怎么读?是sixteen hundred?还是one thousand and six hundred?或者. 是TWO HUNDRED 还是 TWO HUNDREDS ? 是many hundred of 还是many hundreds