A Guide to Using ЭТО

ЭТО - the demonstrative pronoun

It means "this/these" as in "This is a pen" or "These are ducks". Note that we don't use any equivalent of "is" in Russian, so you can even think of the pronoun-like "это" as of "this is/these are" (even if it is not exactly correct).

EXAMPLES:

• Это собака. This is a dog.
• Это мальчик. This is a boy.
• Это кошки. These are cats.
• Это моя машина. This is my car.
• Это правильный ответ. This is the correct answer.

"Это" is also used in definitions:

• Собака - это животное. A dog is an animal.
• Курица - это не рыба. Chicken is not fish.

You can omit "это" in such cases, but keep the dash.

ЭТОТ / ЭТА / ЭТО / ЭТИ - the demonstrative adjectives

They mean "this" or "these" as in "this pen" or "these ducks". These words are always used with a noun and must agree with its gender:

ЭТОТ IS FOR MASCULINE NOUNS:

• этот стул = this chair
• этот мальчик = this boy
• этот рис = this rice

ЭТА IS FOR FEMININE NOUNS:

• эта девочка = this girl
• эта тетрадь = this notebook
• эта лошадь = this horse

ЭТО IS FOR NEUTER NOUNS:

• это яблоко = this apple
• это море = this sea
• это задание = this task

ЭТИ IS FOR PLURAL NOUNS OF ANY GENDER:

• эти мальчики = these boys
• эти девочки = these girls
• эти яблоки = these apples

What Is Confusing

You may have noted that "это" can be both a demonstrative pronoun and a demonstrative adjective of the neuter gender. So, "это яблоко" may mean both "this apple" and "this is an apple", and without context you can only tell them apart by the first capital letter and a fullstop in case it is a sentence.

• это яблоко = this apple // a phrase
• Это яблоко. = This is an apple. // a sentence

A Rule of Thumb

• If you can replace "this/that/these/those" with "it" or "they" → use the undeclined "это" (demonstrative pronoun)
• If you can't → use the declinable "этот/эта/это/эти" (demonstrative adjective)

EXAMPLES:

• This is a table → It is a table? Looks fine! → Это стол.
• This table is mine → It table is mine? No way! → Этот стол мой.
• These are books → They are books? Looks fine! → Это книги.
• Are these books yours? → Are they books yours? No way! → Эти книги ваши?