When you are talking about the present perfect; in other words, you completed the verb in the past, but it still affects you now. For example:
I have eaten the sandwich.
I have washed the dishes recently.
I have been in touch with her.
i do not know how to use embalming in a sentence. (there is the sentence)
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.
How do you use sedition in a sentence
use contingency in a sentence?
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Can you use abstemious in a sentence?
use ize in sentence
This is how you use mound in a sentence
enjoin use in sentence
how can we use travelogue in the sentence
Use it in a big sentence.