26 Sep 2013

Word of the week: The penny dropped

This week's idiom is

the penny dropped

which means that you have finally understood something.

Example: It was only when I saw Peter's car outside Sally's house that the penny dropped and I realised they were having an affair. 


  1. Could be possible to use this idiom in the sane sentence without using "that"? For inatance, substituting it by a comma. Thanks

  2. Hi, Jose Antonio.
    Very good question! It's true that many times we can omit the 'that'. However, in this case it's not possible due to the structure 'It was only when... that...'
    See you.