El subjuntivo con duda y ojalá

Es posible que / es impossible que - Subjuntivo

It is possible / not possible that

Es probable que / es improbable que - Subjuntivo

It is probable / improbable that

Es dudoso que - Subjuntivo

It's doubtful that

No es dudoso que - Indicativo

It's not doubtful that

No creer que - Subjuntivo

To not believe that

Creer que - Indicativo

To believe that

No es verdad / cierto que - Subjuntivo

It's not true that

Es verdad / cierto que - Indicativo

It's true that

Dudar que - Subjuntivo

To doubt that

No dudar que - Indicativo

To not doubt that

No pensar que - Subjuntivo

To not think that

Pensar que - Indicativo

To think that

No estar seguro de que - Subjuntivo

To not be sure that

Estar seguro de que - Indicativo

To be sure that

Negar (e-->ie) que - Subjuntivo

To deny that

No negar (e-->ie) que - Indicativo

To not deny that

No parecer que - Subjuntivo

To not seem that

Parecer que - Indicativo

To seem that

Ojalá (que (not needed)) - Subjuntivo

Hopefully or God-Willing

Dé des dé demos den

Dar (to give)

Vaya vayas vaya vayamos vayan

Ir (to go)

Sea seas sea seamos sean

Ser (to be)

Haya hayas haya hayamos hayan

Haber (to have) - Subjuntivo

He has ha hemos han

Haber (to have) - Indicativo

Esté estés esté estemos estén

Estar (to be)

sepa sepas sepa sepamos sepan

Saber (to know)

Keep the first letter (even if only one) for nos and vos

IR stem changers

No change for nos and vos

AR + ER stem changers