Lo último que recuerdo antes de despertarme en el hospital es sentir un golpetazo en la nuca.The last thing I remember before waking up in the hospital is feeling a thump on my head.
b.
This refers to an idiomatic word or phrase for which there is no word-for-word translation.
no direct translation
Me di un golpetazo con la viga superior de la puerta y ahora tengo un chichón.I banged my head on the top of the door frame, and now I have a bump on my head.
¿Quién era el salvaje que le estaba dando golpetazos a la puerta a las 3 am?Who was the maniac who was banging at the door at 3 am?