no sabe si

Tom no sabe si Mary va a venir en auto o en bicicleta.

Tom doesn’t know whether Mary is going to come by car or by bike.

Tom no sabe si Mary lo recuerda.

Tom doesn't know if Mary remembers him.

Tom no sabe si vendrá Mary.

Tom doesn't know if Mary will come.

Tom no sabe si Mary irá a acampar con nosotros o no.

Tom doesn't know whether Mary will go camping with us or not.

Tom no sabe si es o no verdad.

Tom doesn't know whether it's true or not.

Tom no sabe si Mary vendrá mañana.

Tom doesn't know whether Mary will come tomorrow.

Tom no sabe si Mary quiere o no ir con nosotros.

Tom doesn't know whether Mary wants to go with us or not.

Tom no sabe si vendrá María.

Tom doesn't know if María will come.

Tom no sabe si Mary irá a la montaña o a la playa.

Tom doesn't know whether Mary will go to the mountains or the beach.

Tom no sabe si es verdad o no.

Tom doesn't know whether it's true or not.