Schoo starts at nine o'clock.为什么school后要加名词复数形式啊?

Schoo starts at nine o'clock.为什么school后要加名词复数形式啊? School starts at nine o'clock变一般疑问句 My school starts at nine o'clock是什么意思 School starts at nine o'clock.（改为一般疑问句） school starts at nine o'clock什么意思 school starts at nine o'clock对划线部分提问 at nine o'clock为划线部分 At around eight o'clock,l go to school school starts at nine School at nine o’clock starts at and school four o'clock nine ends at连 my school starts at nine o'clock.和 l get up at half past sev 1、school/my/at/nine/starts/o'clock（.）英语连词成句 2、up/ their school [ ]at nine o'clock