1. PREPOSITIONS

2. Definition:
A preposition is a word that shows the relationship between words or phrases in a sentence.
Some examples :
during, over, within, toward, under, on, through, to, in, into, of, between, by, for, at, around, behind, etc.

3. Examples of sentences:
He was driving toward town.
The weather gets warm during the summer.
They plant trees around the building.

4. NOTICE I:
Use between to refer to two people, groups, or things; use among to refer to more than two.
Examples: They divided that money between them.
He passed among the crowd.
Use different from in most instances. Use different than only to avoid awkward phrasing, especially when what follows is a clause.
Examples: My painting turned out much different than I had expected.
This movie is different from any other martial arts movie I`ve seen.

5. NOTICE II:
If you are trying to speak or write formally, it is usually best to avoid ending a sentence with a preposition.
Examples: Informal: Whom shall I give the message to?
Formal: To whom shall I give the message?
However, if following this rule makes the sentence sound more awkward, it is better to leave it or reword the sentence.
Examples: Awkward: That is the school to which I used to go.
Reworded: That is the school I used to attend.