In another users answer http://chinese.stackexchange.com/a/2046/38 they said: 一 is pronounced in the first tone when it stands alone. It is pronounced in the fourth tone when it precedes a ...
When I first learnt the numbers, I learnt 一 with the first tone yi1. But now, during a Memrise lesson, they teach me that 一个 should be pronounced yi2 ge4 or yi2 ge5. Is this correct and, if so, is ...