1.as often as 每当……； 2.as often as not=more often than not往往,常常,大半； 3.every so often有时,偶尔； 4.how often 多长时间一次. As often as I s...
arrive on表示“到达”，后面接时间或其他名词。 例句 Barring accidents, we should arrive on time. 除非有意外情况，我们应可按时到达。 Please make ever...
