HERE IS, THERE WAS, THERE WILL BE..

He comido

He comido

I have eaten

Han hablado

They have spoken

Has vivido

You have lived

Hay

There is / There are

Había

There was / There were (long time)

Habrá

There will be

Hubo

There was / There were (short time line)

Habría

There would be

Ha Habido

There has been / There have been

Va a haber

There is going to be / There are going to be

Está habiendo

"There is being" / "There are being"

Habiendo

"There being"