# Tahir Hassan's Blog

My Technical Notes

## Wednesday, 17 May 2017

### That vs Which

#### That

That is restrictive:


Our office that has a gym is in London.

This implies that we have more than one office, but the office that is has a gym (the others do not), is in London. The that in that sentence is essential, without it, the meaning of the sentence would be lost.

#### Which

Which is non-restrictive, and adds non-essential information, when removed, the sentence would still make sense. For instance:


Our office, which has a gym, is in London.

This means that we have only a single office, and the which-clause is merely adding extra information that is has a gym. It could be re-written as two sentences:

Our office is in London. It has a gym.