Pronouns are words used to avoid repetitions of a noun {see Subject Pronoums, A1 Level}.

Relative pronouns  are used to introduce relative clauses. They refer to people or things  by replacing the subject expressed in the main clause to avoid the  repetition of it in the relative clause {see  Relative Pronouns, A1 level}.

https://open.books4languages.com/english-a2-grammar/chapter/relative-pronouns-of-people-and-things/

Pronouns are words used to avoid repetitions of a noun {see Subject Pronouns, A1 Level}.

Reflexive pronouns are used to emphasise the subject of the sentence.

https://open.books4languages.com/english-a2-grammar/chapter/reflexive-pronouns/

The future is the tense used to predict or express future events.

We use the future simple to express spontaneous decisions, opinions and hopes {see Future Simple, A2 level}.

Be going to is used to express intentions for the future and make previsions based on signs we see at that moment {see Be going to, A1 level}.

https://open.books4languages.com/english-a2-grammar/chapter/future-with-will-or-be-going-to/

Be going to is a structure that refers to the future {see Be going to, A1 level}.

https://open.books4languages.com/english-a2-grammar/chapter/be-going-to/

The future is the tense used to predict or express future events.

When we use the present continuous structure we refer to fixed plans {see Present continuous, A1 Level}.

https://open.books4languages.com/english-a2-grammar/chapter/present-continuous-for-future/

The future is the tense used to express future events. We use the future simple structure to introduce predictions, beliefs or intentions about the future.

When expressed in its interrogative form, it is used to ask questions.

https://open.books4languages.com/english-a2-grammar/chapter/future-simple-interrogative/

The future is the tense used to express future events. We use the future simple structure to introduce predictions, beliefs or intentions about the future.

When expressed in its negative form, the verb denies something about the subject.

https://open.books4languages.com/english-a2-grammar/chapter/future-simple-negative/

The future is the tense used to express future events. We use the future simple structure to introduce predictions, beliefs or intentions about the future.

When expressed in its affirmative form, the verb confirms something about the subject.

https://open.books4languages.com/english-a2-grammar/chapter/future-simple-affirmative/

The present perfect  is used to express completed actions which have occurred in the past,  but are connected to the present and still have effects on it {see Present Perfect, A2 Level}.

The past simple is used to express situations that occurred and concluded in the past {see Past Simple, A1 Level}.

Present perfect and Past simple are different in form and meaning.

https://open.books4languages.com/english-a2-grammar/chapter/present-perfect-vs-past-simple/

Prepositions are small words that are related to  another element in the sentence. They are essential because they provide  additional details about the sentence by locating events, people, and  objects in a place and time.

To locate an event in a time frame and add information about its duration, we use the prepositions for and since.

https://open.books4languages.com/english-a2-grammar/chapter/for-and-since-with-present-perfect/