那1770、1660、1280怎么写呢?
追答seventeen seventy,sixteen sixty,twelve eighty;
seventeen seventies,sixteen sixties,twelve eighties;
one thousand seven hundred and seventy,one thousand six hundred and sixty,one thousand two hundred and eighty。
参考资料:http://wenku.baidu.com/view/6ecf631910a6f524ccbf8523.html