Your kitchen stove doesn't work. You call your landlord to fix it. You explain the problem to him:
You can hear the gas coming out when you turn the knob, but it doesn't ignite.
"Gas" can mean a few different things in American English:
- Gasoline, which you put in your car to fuel it.
- Gas, which is kind of like air. Air is a kind of gas. The Helium inside a balloon is another kind of gas. "Gas" contrasts with "liquid" and "solid".
- Natural gas is a kind of gas (definition #2) that can be burned for heat or energy. This is what people sometimes use in their stoves.
A "knob" is something that you turn in order to control something. Some examples of "knobs" include:
- a doorknob
- the volume knob on a radio
- a knob to turn a lamp on and off
To "ignite" means to catch on fire. The word "ignite" describes just the moment when something first begins to burn. For example, a match "ignites" when you strike it.
You can use "ignite in the pattern "(someone) ignites (something):
She ignited each of the candles, one by one.
But you shouldn't use "ignite" without an object when talking about people, unless the people themselves are burning!
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