e flat out of She is flat out of patience 她已经失去耐心.
run out（= become used up）其主语通常为时间、食物以及金钱等名词
His money soon ran out.run out of用完了,表示主动含义,主语一般是人.
He is always running out of money before pay day.
[注意]run out of还有“从…中流出”之义；run out也表示“流出”,但其后不接宾语.eg.She has___ t...