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She usually sleeps (nine hours) a day对括号内提问 （）（）does she usu

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She usually sleeps (nine hours) a day对括号内提问 （）（）does she usually sleep a day
How long
how long的用法
how long有以下两个主要意思：
1.表示多长时间,主要用来对一段时间(如three days,four weeks 等)提问.如：
A：How long did he stay here?他在这儿呆了多久?
B：About two weeks.大约两个星期.
A：How long does it take to get to London from here?从这里到伦敦要多长时间?
B：At least ten hours.至少要10个小时.
2.表示某东西有多长.如：
A：How long is the river?这条河有多长?
B：About 500 km.大约500千米.
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She usually sleeps (nine hours) a day对括号内提问 （）（）does she usu She usually relaxes [5 hours] every day .括号内提问 She sleeps (seven) hours every day 对划线部分提问 He usually sleeps 15 hours every day(对划线部分提问） He sleeps nine hours every day.[对nine hours划线提问] she sleeps seven hours every dag （对划线部分提问） She sleep nine hours every night 对nine提问 She sleeps nine hours.为什么nine前不要加for? He usually sleeps () 12 hours a day. My little brother sleeps nine hours every day.(划线提问) 1、Babies usually sleep （20 hours） every day .(对括号里的部分提问） the baby usually sleeps (more than twelve）hours a day?