Translate: I want you to study more.
(Yo) Quiero que tú estudies más.
I doubt that...
Dudo que...
I'm happy that...
Me alegra que.../Estoy feliz de que...
It's important that...
Es importante que...
Translate: Antes de que tú salgas, estudia.
Before you leave, study.
Translate: Hopefully (Ojalá), it doesn't rain tomorrow.
Ojalá que no llueva mañana.
I don't believe that...
No creo que...
Translate: I'm afraid that he's sick.
Tengo miedo de que él esté enfermo. / Temo que él esté enfermo.
It's necessary that...
Es necesario que...
Translate: A menos que nosotros estudiemos, no aprobaremos.
Unless we study, we won't pass.
Translate: I wish they would come to my party.
Deseo que ellos vengan a mi fiesta.
It's possible that...
Es posible que...
Translate: It suprises me that you know.
Me sorprende que tú sepas.
It's better that...
Es mejor que...
Translate: Te presto me coche con tal de que tú no lo choques.
I'll lend you my car provided that you don't crash it.
Translate: She hopes that we have a good time.
Ella espera que nosotros tengamos un buen tiempo.
Translate: It is improbable that she has the answer.
Es improbable que ella tenga la respuesta.
Translate: It saddens me that they leave.
Me entristece que ellos se vayan.
Es esencial que...
Translate: Estudio para que mis padres estén orgullosos.
I study so that my parents are proud.
Translate: We desire that you all be happy.
Nosotros deseamos que ustedes sean felices.
Translate: Perhaps (Quizás) they are lying.
Quizás ellos mientan. / Quizás ellos estén mintiendo.
Translate: It angers me that you all don't do your homework.
Me enoja que ustedes no hagan su/la tarea.
It is urgent that...
Es urgente que...