A1
There is / There are
Как сказать «есть» о наличии предметов.
Единственное и множественное
There is a book on the table. There are three chairs. Сокращение в разговорной речи: There's ...
Вопрос и отрицание
Is there a park? Are there any shops? There isn't a car. There aren't any eggs.
Some / any
В вопросах и отрицаниях часто any: Are there any problems? В утверждениях — some: There are some apples.