Theory:
Pronunciation 9 - Difficult Letter Combinations: TION, SION and SSION
Words like NATIONAL, EQUATION, PASSION and VISION can cause problems for people because it is difficult to see how they should be pronounced.
The letter combinations we are looking at are TION, SION and SSION, and they can have 2 ways of being pronounced, the sound of SHAN, where the SH sounds like the SH in SHeep and the A sounds like the U in cUp, or SHAN, where the SH sounds like the SI in viSIon.
Looking at examples where TION, SION and SSION sound like SHAN, where the SH is as in SHeep, and the A sounds like the U in cUp.
Words like NATION, NATIONAL, STATION, CREATION, INTERNATIONAL, AGGRESION, DEPRESSION all have endings that sound like SHAN, where the SH sounds like the SH in SHeep and the A sounds like the U in cUp.
Examples where SION sounds like SHAN, where the SH sounds like the SI in viSIon, and the A sounds like the U in cUp, are COLLISION, CORROSION, CONVERSION and CONCLUSION.
Examples to work with these kinds of words are given below: