大家好， I was wondering whether one would say 两岁 or 二岁 to mean "two years old". I have two Chinese books that say different things.

谢谢！

 

Both can be used but you'll see that 两岁 is much more common.

 

Quite interesting to know that both are correct .I can't remerber the last time I used er4sui4 in a sentence.Maybe that's a regional difference?

 

If it's printed on a chart, both 两岁 and 二岁 can be used.
But when you speak, you should always say 两岁.