英语翻译请问这里的ten后面为什么不用O'clock?而第二句six后面用了o'clock?

英语翻译请问这里的ten后面为什么不用O'clock?而第二句six后面用了o'clock? at ten to six o'clock by ten o'clock that clock's ten minutes slow 这里clock后面的s怎么念? It's six o'clock.的前面一句是什么 at five o｀clock 后面的 o＇clock必须加么 The o'clock pointed to eleven.这里的o'clock是不是错了啊? at ten o'clock 的意思 一个英语小问题-急,It's ten o'clock后面跟的是什么时态,将来时还是正在进行时?题：It's ten o' Lulu always gets up at six o'clock(用at six o'clock) I shall wait till ten o'clock这里的till是什么词?这句的语法结构? What time it is?It is about 8 o'clock 为什么用about而不用in?