Benny's dad would often offer him ice cream as an incentive for mowing the lawn.
I would eat that, but it is high in fat.
Simon would get a new car if he could afford one.
Most people would not go into space, but I would.
How would you use theory in a sentence
I would use it correctly in a sentence, of course. Thank you for asking.
Jarry use paroxysm in a sentence.\
Would not that be "Would not that be?"?
reassuring sentence
How would you like me to put that in a sentence?
elan in a sentence
please use halcyon in your sentence children.
How can you use the word infectious in a sentence
I can answer it for you.
So- you are asking when to use 'when' in a sentence. When you are asking how to use when in a question, you are already using when in a sentence, because a question actually is a sentence. I like to use when in a sentence whenever I like.
Since that is not a word I would not attempt to use it in a sentence.