how to swim how to say 怎麼說how to produce [經濟學]如何生産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；多少時間之後how so 爲何如此？how old are you 你多大了；你多大年紀how old 幾嵗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 是什麼滋味；是什麼感覺；意味著什麼how insensitive how firm a foundation how ever