Prepositions are small words that connect elements  in a sentence. They are essential because they provide additional  details about the sentence.

Prepositions of possession are used to express that something belongs to a person, animal or thing.

https://open.books4languages.com/english-a2-grammar/chapter/prepositions-of-possession/

Prepositions are small words that connect elements  in a sentence. They are essential because they provide additional  details about the sentence.

Prepositions of method and manner are used to explain in what way something is done.

https://open.books4languages.com/english-a2-grammar/chapter/prepositions-of-method-and-manner/

Prepositions are small words that connect elements  in a sentence. They are essential because they provide additional  details about the sentence.

We use the prepositions of place to locate an event in space.

https://open.books4languages.com/english-a2-grammar/chapter/prepositions-of-place-extension/

Adverbs are expressions that function as modifiers of other elements in the clause. They can provide a wide range of information.

Adverbs of place provide information about the place of an action.

https://open.books4languages.com/english-a2-grammar/chapter/adverbs-of-place/

Adverbs are expressions that function as modifiers of other elements in the clause. They can provide a wide range of information.

Adverbs of degree or intensifiers are used to provide information about the intensity of an action or adjective {see Adverbs of Degree, A1 level}.

https://open.books4languages.com/english-a2-grammar/chapter/adverbs-of-degree/

Adverbs are expressions that function as modifiers of other elements in the clause. They can provide a wide range of information.

Adverbs of manner are used to provide information about the way (how) something is done.

https://open.books4languages.com/english-a2-grammar/chapter/adverbs-of-manner/

Adverbs are expressions that function as modifiers of other elements in the clause. They can provide a wide range of information.

https://open.books4languages.com/english-a2-grammar/chapter/adverbs-formation/

So that and so…that are two different, though similar, constructions which express different things.

So that highlights the consequences of an action or purpose. So…that shows extremes leading to certain results.

https://open.books4languages.com/english-a2-grammar/chapter/so-that-vs-so-that/

One and ones are replacing words that are used to avoid repetition.

https://open.books4languages.com/english-a2-grammar/chapter/one-and-ones/

A modal verb is a type of auxiliary (helping) verb  that has no meaning on its own but it modifies the main verb, changes  its meaning and gives more details about the action.

May  is a type of auxiliary modal verb used to express the possibility  for something to happen and also to ask for or give permission.

https://open.books4languages.com/english-a2-grammar/chapter/may-modals-of-possibility/