Lesson 56--Run out of

Run out of  =  reduction of something until there is nothing left.

  i.e. I am running out of money.  (I have some, but soon it will be gone.)
        I ran out of money.  (I have no more money.)

Things you can run out of:  time, money, patience, energy, gas, luck.....

examples

I ran out of time before I could finish the exam.
I ran out of patience and gave up on the crossword puzzle.
Everything was fine on the trip to Montreal, until we ran out of gas.

Other Forms

Interestingly, there is another way to organize this expression.

My money ran out.
Time has run out.

Please experiment and enjoy.