【谚语】Beggars cannot be choosers.叫花子不能挑肥拣瘦;饥不择食。【妙用】I would have preferred a bed,but beggars can’t be choosers so I slept on the sofa.我本想要张床,但是叫花子不能挑肥拣瘦,所以我就睡在沙发上了。【谚语】Once bitten,twice shy.一次被咬,下次胆小;一次上当,下次小心。【妙用】She certainly won’t swim again—once bitten,twice shy.她