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Ben9108 Posted 12 years ago
Grammar

Is the “when” used as a preposition?

I would like to seek someone to solve my question about the usage of “When”. Is the “when” used as a preposition and a gerund following it shown below sentences?Doors to refrigerated spaces should be kept closed when not in use. What special precautions should be taken when using XYZ medicament. Protect information when using the internet and email How might I be putting information at risk when using the internet?
  

Top answer

It seems to me that it is a conjunction, just a reduced form of: Doors to refrigerated spaces should be kept closed when they are not in use. What special precautions should be taken when you/one/etc. is/are using XYZ medicament?

  • It seems to me that it is a conjunction, just a reduced form of: Doors to refrigerated spaces should be kept closed when they are not in use.
  • What special precautions should be taken when you/one/etc.
  • is/are using XYZ medicament?
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1 Answers
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It seems to me that it is a conjunction, just a reduced form of:

Doors to refrigerated spaces should be kept closed when they are not in use.
What special precautions should be taken when you/one/etc. is/are using XYZ medicament?

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