In the programme we look at the difference between the words 'fragment' and 'fragmentation'.

You might say: "Well the difference is simple: it's just those five letters 'ation' at the end."

And you would be right. Those five letters are a 'suffix' - something we add on to the end of a word to make a new word.

Find out what the suffix 'ation' does, and learn a few other words which end in those letters.

If you have a question you'd like us to answer, you can write to us or email: questions.chinaelt@bbc.co.uk