الفرق بين There is \ There are

There is \ There are   تعني   (  يوجد  ) .

There is	مع الاسم المفرد
There are	مع الاسم الجمع

There is    +  أسم مفرد

There is a cat.

There is a boy behind the tree.

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There are  +  أسم جمع

There are two cats.

There are three girls.