Today we're going to explain why we never use the phrase “more better.” We sometimes hear students say this, for example, “My English is getting more better” – but it’s always incorrect.
The reason is this: to compare good things, we use good – better – best:
And to compare bad things, we use bad – worse – worst:
We only use “more” and “most” to compare with adjectives that are longer words – like convenient, interesting, or expensive:
But we never use “more” or “most” together with "better" or "worse"!
Now we can use the word “much” with to add extra emphasis and say that something is a LOT "better/worse", not just a little bit "better/worse". For example:
And we can also add “much” to the comparative adjectives that use “more”:
Again, we are saying that it’s a LOT more convenient or expensive, not just a little.
I hope this helps make things clear!