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This simple question is very complex actually, since we have no idea the context of what you are saying. However we can discuss the various means for engines whistle.
An engine could be three things: An engine for a car or an engine as in a train or an engine as in a red indian.
Therefore we could have the sentences "The engine (car) whistles every time I go over 120km" or "The engine (train) whistled when it passed us." or "The engine (red indian) whistled to his friends to attack!"
In the sentences above the word engine is a noun where as the word whistle is a verb.
However if you want to say an engine has a whistle then you would say "engine's whistle." Here its important to attach an apostrophy with a "s" to indicate that the engine possess or owns the whistle.
So a sentence could read, "The engine's whistle is rather loud so stand back!"
What else can I help you with?
What are the nouns in the sentence A whistle signals the start of practice?
The nouns are whistle, start, and practice.
How do you use whistle as a verb in a sentence?
You have to whisper in the library so you won't disturb people who are reading.
What is a better sentence for he blew his whistle and it was loud?
The wind blew my coat out of my hands.
How can you use thistle in a sentence?
I had a thistle stuck in my shoe.
Identify the problem in the following sentence Blowing the whistle loudly the driver on the road nearby was surprised by the train?
Dangling Participle
When in doubt whistle how would you reword this sentence?
Whistle when in doubt
What is a sentence using the word whistle as a noun?
on your paper the boy put down whistle as it's sentence.
How do you use whistle in a sentence as a verb?
I whistle when I'm scared.Sometimes, I whistle but only make a blowing sound.I whistle to keep a good mood.
What is the simple subject of this sentence The whistle announced the trains arrival at the station?
Whistle
Can you whistle verb and helping verb?
Sure! In the sentence "She can whistle," "whistle" is the main verb and "can" is the helping (modal) verb.
How use whistle in a sentence as a noun?
The referee blew his whistle to signal that there was a penalty.
What are the nouns in the sentence A whistle signals the start of practice?
The nouns are whistle, start, and practice.
Is this sentence active or passive The noon whistle announced lunchtime?
The sentence is active. To make it passive, you would write "Lunchtime was announced by the noon whistle."
Why do diesel engines whistle?
Most diesel engines are turbodiesels, and the whistling is the sound of the turbo spooling up as it creates boost.
How do you use the word whistle in a sentence as a noun?
He blew a whistle to signal the start of the race.
What is the type of subordinating clause in the sentence The man quit work when the whistle blew?
"when the whistle blew"
What is a sentence for the word whistle?
He liked to whistle as he walked.The whistle signalled the end of the match.
