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Drwho Posted 14 years ago
Essay & Composition Writing

That, Which

Hi, Could anybody help me with the following phrase?

To do this, we have used Wave, a new tool for the study of the sea temperatures which is an upgrade of the software Tiphoon.

or

To do this, we have used Wave, a new tool for the study of the sea temperatures that is an upgrade of the software Tiphoon.

Are interchangeable both words or not? If both are correct, Which sounds better

Thanks!!!!
  

Top answer

To do this, we have used Wave, a new tool for the study of the sea temperatures, which is an upgrade of the software Tiphoon. Your first example, with "which", is correct. The relative clause (underlined) is of the supplementary (non-restrictive) kind, and "that" is not allowed with supplementary relatives.

— BillJ

  • To do this, we have used Wave, a new tool for the study of the sea temperatures, which is an upgrade of the software Tiphoon.
  • Your first example, with "which", is correct.
  • The relative clause (underlined) is of the supplementary (non-restrictive) kind, and "that" is not allowed with supplementary relatives.
  • Notice that I've inserted a comma before "which"; this is obligatory with supplementary relatives.
  • BillJ
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1 Answers
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To do this, we have used Wave, a new tool for the study of the sea temperatures, which is an upgrade of the software Tiphoon.

Your first example, with "which", is correct. The relative clause (underlined) is of the supplementary (non-restrictive) kind, and "that" is not allowed with supplementary relatives. Notice that I've inserted a comma before "which"; this is ob
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