how to swim how to say 怎么說how to produce [經(jīng)濟學]如何生產(chǎn)how to play golf how to get lucky how to do it 如何做how terrible 糟糕how soon 多久;多快;多少時間之后how so 為何如此?how old are you 你多大了;你多大年紀how old 幾歲how often 多長時間一次how much 多少,多少錢how many 多少how long it will take 這個需要多長時間how long 有多久how it feels 是什么滋味;是什么感覺;意味著什么how insensitive how firm a foundation how ever