英语问题急!急!急!!!!

pianos
Chinese

pianoes
chinese

Pianos
Chinese

pianos
Chinese
以O结尾的名词变复数，有生命的加-es。如：tomato-tomatoes
无生命的加-s。如：photo-photos

pianos
Chinese复数仍是还是chinese

附:
以o结尾的而o前是辅音字母的单数名词变成复数时，应加es, 如：
buffaloes, calicoes, cargoes, dominoes, echoes, embargoes, heroes, jingoes, mosquitoes, mottoes
(mottos), mulattoes, potatoes, tomatoes, tornadoes, torpedoes, volcanoes.
但有例外如：
banjos, bolos, cantos, contraltos, dynamos, gigolos, octaves, pianos, quartos, silos, solos, sopranos, zeros.