No, "the water is boiling" means that it is boiling at the time. If you want to say it was done, you can say, "the water was boiling".
We don't cook water.
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The water is boiling. It means the water was done boiling.
How we say the water before boiling, can we say, the water is still cooking?
Before it is boiling, it is coming to the boil.
When it is boiling very gently on a low heat, it is simmering.
Or you can just say it's on. 'I've just put the kettle on, but it's not boiling yet.' (I've just noticed, you put water on when you're using it in cooking. When you put water on to boil before making a drink, it's common to talk about 'putting the kettle on' rather than 'putting some water on'. And although it would have to be very very hot for the actual metal container to boil, we customarily say 'the kettle's boiling' rather than 'the water in the kettle's boiling' )
Last edited by BobK; 20-May-2014 at 09:54. Reason: Fix typo
And when the kettle is coming to the boil and making that intensifying, difficult-to-describe noise, we say 'the kettle's singing'.
I have a friend who still has an original, proper whistling kettle. It's very nostalgic and all, but it's really annoying after a couple of seconds if you don't remove it from the hob!
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