When the project was assigned, other homework assignments got put on the back burner.
'Pulled off' means accomplished, and to put something on the 'back burner' means to reduce its priority. Therefore the sentence 'pulled off at the back burner' does not make a huge amount of sense. But, it is possible that the person who said it may have meant accomplished something that was not high on ones list of priorities.
To include an idiom in an example sentence, simply incorporate the idiom naturally into the sentence to convey a figurative meaning. For example, "She had a chip on her shoulder" is an idiom meaning she was easily offended or held a grudge.
My cousin's current favorite idiom is 'as nice as spice'.
That bully is about to deliver his famous knuckle sandwich.
A False friend is just like a snake in the grass.
"Animal" is not an idiom. An animal is a living thing with more than one cell which cannot make its own energy.
If you take a fancy to eating chocolates you will get fat.He took a fancy to her way of speaking.
This is not an idiom. Idioms make little or no sense unless you know the definition. This sentence makes perfect sense, so it is not an idiom. The dead fish smelled so bad that even as high as Heaven, you could smell them.
An idiom misuse is to use and idiom in a wrong way that doesn't make sense.
An idiom is a phrase that appears to make sense, but actually has another meaning. If the sentence makes sense, but seems to mean something besides what it looks like, then it is an idiom. "Frank kicked the bucket" makes perfect sense, and when you realize that it means "Frank died," you have two different meanings.
You don't really need a whole song to remember the definition of one word. Make up a silly rhyme or short sentence instead. An idiom is a phrase that seems to mean one thing, but really means something quite different. You can't figure it out just by defining the words. You could make up any rhyme or sentence you want to. You could say "Figure out an idiom/Don't be an idiot ... or What does it mean/Don't be tense/Idioms seem/To make no sense!
Take a punch means to take a bow. When the sir won the trophy, his students took a punch.