为什么He usually sleeps 20 hours every day.中,sleeps和20之间不加for?
问题描述:
为什么He usually sleeps 20 hours every day.中,sleeps和20之间不加for?
答
时间前面可以省略for
为什么He usually sleeps 20 hours every day.中,sleeps和20之间不加for?
时间前面可以省略for