​Key words

A bit

A little

Slightly

They can be used with comparative adjectives.

Structure

​Small difference

​Not much

Not a lot​

My brother is a little younger than me

​Small difference

I am a bit older than him

​Key words

Much

A lot

Far​

They can be used with comparative adjectives.

Structure

​Large Difference

I'm much fitter than my brother

​Large difference

​

He is a lot faster than me

​Example

Today is as ​warm as yesterday.

​ ​

as + adjective + as

Structure

​No difference = the same

Example

My brother isn't as fit as me.​

​ ​

(not) as ....as

Structure

One thing is less than another