I am breathing hard constantly when I run on my treadmill.
In finishing his homework, the boy found the internet to be less than useful, as he was constantly getting distracted by games.
Wind always blows constantly at seashore. Some times at the banks of big river too wind is blowing constantly. Usually where there is a big open space and large water body, wind's speed at such places will be considerably more. Wind is constantly blowing in the deserts too.
A subject in a sentence is who, what, or where the sentence is about.
This is a sentence. A prisoner has to serve the sentence the judge gives him.
This example sentence uses the word 'sentence' in an exemplary fashion.
The professor was constantly badgering us to think outside the box.
He constantly reverted to his childhood.
The calls were coming in constantly.
A sentence for using the word is :: My new wig is constantly falling off.
The atmosphere was laden with moisture. The atmosphere constantly changes.
Taking this to be the sentence (it's slightly edited):"The old car caused trouble constantly, but she never complained."the adverbs are "constantly" and "never." Both state when the action of the verbs ("caused," "complained") took place.
She was so jealous that she constantly checked his phone and computer.
I am constantly admonishing contributors to punctuate the end of example sentences!
You will not hasten the end of the class by constantly watching the clock.
There are volcanoes that are constantly erupting all over the world.
My sister is constantly scheming ways to steal my favorite clothes from me.
The rebellious young boy is constantly defying his teacher's authority.