he arrived home at seven o'clock.(at seven o'clock划线)
问题描述:
he arrived home at seven o'clock.(at seven o'clock划线)
为什么用when
划线部分提问,为什么用疑问副词 when
答
因为划线部分是是时间,而when表示”什么时候“,提问时间,所以用when