Let’s imagine you’re writing an essay about your favourite writer. You might decide to begin by mentioning your favourite of his books, like so:

George Orwell wrote Nineteen Eighty-Four in 1949.

Now, let’s imagine you’re writing an essay about your favourite novel. A logical start would be to mention who wrote it, like so:

Nineteen Eighty-Four was written by George Orwell in 1949.

What’s the difference between these two sentences? I’m sure you’ll agree that both contain the same information. But the focus is different, isn’t it? In the first we’re focussing on the writer, and in the second, on the novel. And we change focus by changing focus – between the active voice and the passive voice.

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