现完练习.He has stayed home since the day before yesterday

题目

现完练习.He has stayed home since the day before yesterday
He has stayed home since the day before yesterday.
"the day before yesterday"划线部分提问

答案

How long has he stayed home?
因为此句中的划线部分是表示一段时间的概念,所以要用How long来提问.译文是：他在家呆了多长时间?