The..., the... It depends!

Some things depend on other things.

If you want to speak English better, then it will depend on how much practice you have.

If you want to learn more vocabulary, then it will depend on how much you read and how much you use a dictionary.

If you want to write better letters, then it will depend on how many good examples you see and study.

If you want to sound more American or British, then it will depend on how much you listen and copy a specific accent.

When something depends on something else, as in these examples. you can use a special grammatical structure in English:

THE + comparative, + THE comparative.

Here are those same examples using this structure:

The more practice you have, the better you speak English.

The more you read with a dictionary, the more vocabulary you will learn.

The more you see good examples, the better you will be able to write letters.

The more you listen and copy a specific accent, the more British or American you will sound.

Notice the different types of comparative:

The more practice... (NOUN)

The better... (ADVERB)

The more British... (ADJECTIVE)

And this structure is not limited to MORE. You can also use LESS.

If you want to use your dictionary less when you read, then it will depend on how much you read.

The more you read books in English, the less you will need to use your dictionary.

Put some examples in the comments and I will let you know how correct they are.