Презентация по английскому языку по теме Relative clauses

Relative clausesDefining Defining relative clauses give us essential information. We cannot remove the relative clause and still understand the sentence. Non-definingNon-defining relative clauses give us extra information.We can remove the relative clause and still understand the sentence. Relative clausesDefining For example, imagine there are two boxes of different colour. The grey box is empty. The blue box is full.We can say: The box which is blue is full.But if we just say 'The box is full' then the sentence makes no sense because there are two boxes and it's not clear which one we are talking about. The colour of the box is not extra information.It is essential information.Non-definingFor example, imagine there is a blue box on its own. It is full.We can say: The box, which is blue, is full. If we just say ‘The box is full.' the sentence still makes sense. The fact that it is blue is just extra information. Relative clausesDefiningWith defining relative clauses, we: cannot use commasThe box which is blue is full.The box ,which is blue, is full.Non-definingWith non-defining relative clauses, we: Must use commasThe box ,which is blue, is full. Relative clausesDefiningcan replace who, which, when and why with that The box that is blue is full.When the subject of the defining relative clause is different to the subject of the rest of the sentence, we can sometimes leave out the relative pronoun completely.Non-definingcannot replace the relative pronoun with thatThe box ,which is blue, is full.The box ,that is blue, is full.cannot ever leave out the relative pronounThe box ,which is blue, is full.The box , is blue, is full.