Fondamenti della lingua inglese Laura Cignoni - Paleopatologia

PROPOSIZIONI RESTRITTIVE E NON-RESTRITTIVE
Defining and non-Defining Relative Clauses
I relativi that e which si usano in maniera diversa.
That si usa nelle proposizioni relative restrittive (defining relative clauses), e fornisce informazioni
essenziali. Non si usano le virgole per separare la proposizione relativa dal resto della frase.
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The operating room that I showed you yesterday will be made more efficient.
While the ligaments that link the head to the torso (i.e. those related to the cervical vertebrae)
survive, the head will maintain its original position, but as soon as they break down it will fall to
one side or the other because of the near spherical shape of the cranium in the occipital region.
Which si usa nelle proposizioni relative non-restrittiva (non-defining relative clauses), fornisce
informazioni aggiuntive, non essenziali. La proposizione relativa è separata da virgole.
The briefcase on the desk, which contains journals and magazines, is mine.
The skeleton is in a wooden coffin (which is different to the bier: the latter transports the
corpse from home to the place of burial). (The Archaeology of the Dead, 36).