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Prajwalkr Posted 14 years ago
Grammar

Cause of/for

Hi
Which would be a reasonable choice in this case:

AIDS is a dangerous disease, the cause of / for which is not known.

Also, can you please explain me the general difference these two phrases?

Thanks.

Prajwal
  

Top answer

I say of. Here is my interpretation. AIDS is a dangerous disease, the cause of which is not known.

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1 Answers
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I say of. Here is my interpretation.

AIDS is a dangerous disease, the cause of which is not known. (The cause of the disease is not unknown.)

The difference between the two phrases is usually a little subtle. You could use cause for in your example, but that would change the meaning.

AIDS is a dangerous d