whenasconj.<古> 然而； 而whenadv.什么时候；当 ... 时conj.然后；可是；当 ... 时pron.什么时候n.时间when two Sundays come meet一天哪有两个星期日,决不会When will she is back?When will she be free?When did you get back?When we learn our ABC's.When do we meet again?When you start doubting me当你开始怀疑我的时候When would that be for?When we doubt or disbelieve当我们对别人说的话When flowers gaze at you.花儿凝视著你。