Do you know the difference between when you need to use "the" and when you don't need it?

I'm not english speaker can you teach me about itt?

There is no absolute answer to this. The use of "the" is even different, at times, between British English and American English.

Read about this in MANY of the websites in these search results:
http://www.google.com/search?q=when+to+use+%22the%22&oq=when+to+use+%22the%22&aqs=chrome..69i57j0l5.9235j0j7&sourceid=chrome&ie=UTF-8

If you are talking about some particular thing or place or person then you must use "the".

If you are talking about any particular position.

You should use "the".

Certainly! Understanding when to use the definite article "the" in English can be a bit tricky, but I can certainly help you out.

1. When to use "the":
- Use "the" when referring to a specific noun or noun phrase that both the speaker and the listener are familiar with.
Example: "I saw the movie last night." (referring to a specific movie)

- Use "the" before singular or plural nouns that are unique or specific.
Example: "The sun is shining." (referring to the one and only sun)

- Use "the" to refer to something that has already been mentioned or introduced.
Example: "I have a cat. The cat is black."

- Use "the" before superlatives and ordinal numbers (e.g., the most, the best, the first).
Example: "She is the tallest girl in the class."

2. When not to use "the":
- Do not use "the" when referring to general or non-specific nouns.
Example: "I like to play soccer."

- Do not use "the" before uncountable nouns (e.g., water, music, advice) when used generally.
Example: "I need some water."

- Do not use "the" before proper nouns (e.g., names of people, places, or companies).
Example: "John is a doctor."

Remember that these are just general guidelines, and there are exceptions and specific rules for certain situations in English. It's always a good idea to practice and expose yourself to English language materials to develop a better understanding of when to use "the" and when not to use it.