capitalize the following book titles according to English grammar. for each sentence explain why you decided to capitalize

this is a story about a girl and a boy
The title should be capitalized as follows: **"This Is a Story About a Girl and a Boy."**

### Explanation:

1. **First Word Capitalization**: The first word of the title, "This," is capitalized because, in English grammar, the first word of a title is always capitalized.

2. **Main Verbs and Nouns**: The words "Is," "Story," "About," "Girl," and "Boy" are capitalized because they are either main verbs or important nouns in the title. In title case, significant words (nouns, pronouns, verbs, adjectives, and adverbs) are typically capitalized.

3. **Prepositions and Conjunctions**: The word "a" is not capitalized because it is an article, and "about" is a preposition. In title case, articles, conjunctions, and prepositions of fewer than five letters are usually not capitalized unless they are the first word of the title.

Overall, the capitalization follows the conventions of title case, where significant words are capitalized to highlight the main ideas of the title while keeping less important words in lowercase.
  Sure! Here are the capitalized book titles and the reasons why I decided to capitalize them:

1. A Girl and a Boy:
	* I capitalized "A Girl" because it is the first word in the title of the book, and as such, it is proper to capitalize it.
2. This Is a Story About a Girl and a Boy:
	* I capitalized "This" because it is a proper noun and the first word in the sentence.
	* I capitalized "Story" because it is a proper noun and the title of the book.
	* I capitalized "About" because it is a conjunction connecting the title of the book to the rest of the sentence.
	* I capitalized "a Girl" and "a Boy" because they are both proper nouns and the titles of the characters in the book.

So, the full sentence would be: "This Is a Story About a Girl and a Boy."