*To be* in the present

To be
Afirmative
I           am-----------------------------Yo soy: singular
You      are-----------------------------Tu eres: singular
He         is------------------------------Él es: singular
She        is------------------------------Ella es: singular
It           is------------------------------Eso es: singular
We       are-----------------------------Nosotros somos: plural                                           
You      are-----------------------------Vosotros sois: plural
They     are-----------------------------Ellos/as son: plural

Negative
I           isn't----------------------------Yo no: singular
You      aren't--------------------------Tu no: singular
He         isn't---------------------------Él no: singular
She        isn't---------------------------Ella no: singular
It            isn't---------------------------Eso no: singular
We        aren't--------------------------Nosotros no: plural
You       aren't--------------------------Vosotros no: plural
They      aren't--------------------------Ellos/as no: plural

Interrogative
Am   I?---------------------------------Soy yo?: singular
Are  You?------------------------------Eres tu?: singular
Is     He?-------------------------------Es él?: singular
Is     She?------------------------------Es ella?: singular
Is     It?--------------------------------Es eso?: singular
Are  We?------------------------------Somos nosotros?: singular
Are  You?-----------------------------Sois vosotros?: singular
Are  They?----------------------------Son ellos/as?: singular