"Here is my backpack, Tim."
Translation:Вот мой рюкзак, Тим.
Nouns having genders is a common thing in many languages, and English is actually a weird one because it doesn't (well, not anymore).
Like how in Spanish, you have El (Masculine) and La (Feminine), or in Dutch you have "De" (Masc.) and "Het" (Fem.). These words are all forms of the English "The", but are used with words that have the corresponding gender. To elaborate, in Spanish the noun "agua" (water) is masculine. Therefore, you must say "el agua", as "la agua" is incorrect. Adjective/article-noun agreement is an important thing in many languages, and I highly suggest you learn about it before trying to learn a language, as the majority of languages useful to an English speaker (Indo-European languages) will have gendered nouns.