We can use comparative adverbs to show change or to make comparisons:
I forget things more often nowadays.
She began to speak more quickly.
They are working harder now.
We often use than with comparative adverbs
I forget things more often than I used to.
Girls usually work harder than boys.
We use these words and phrases as intensifiers with these patterns:
much - far - a lot - quite a lot - a great deal - a good deal - a good bit - a fair bit
I forget things much more often nowadays.
We use these words and phrases as mitigators:
a bit - just a bit - a little - a little bit - just a little bit - slightly
She began to speak a bit more quickly