Preposition - "Through"

Preposition – “Through”

Preposition "Through" refers to moving from one side or point to another side or point, often while passing inside or within something. Example: She walked through the forest to reach the other side.

Preposition - "By"

Preposition – “By”

Preposition by as an agent or doer: In passive voice constructions, the preposition by is often used to indicate the doer or agent of the action. Here are some examples: The book was written by Mark Twain. In this sentence, by indicates that Mark Twain is the person who wrote the book.