complex
The structure used in this sentence is a compound sentence. It consists of two independent clauses, "Mom knows who ate the last piece of pie" and "but won't tell," joined by the coordinating conjunction "but."
It seems like there might be a typo in your question. If you meant "What is a sentence structure?" then sentence structure refers to the way words are organized in a sentence, including the order of words, phrases, and clauses to convey meaning. Good sentence structure is important for clear communication.
Sentence Structure
Time flies like an arrow. Fruit flies like a banana. Parallel structure is when the sentence is basically the same with different words. The structure of the sentence is the same in both cases. The words of the sentence may be different in both cases.
compound-complex A+
A Concluding Sentence is the last sentence of a paragraph(s), it summarizes everything that you just wrote about and it is somewhat like your Introduction Sentence. Usually, your concluding sentence will say something like "In conclusion," or "Therefore," or "To summarize." Basically, when writing a formal paper, you have three steps -- "Tell them what you're going to tell them" (the Introduction), "Tell them" (the Body), and "Tell them what you just told them" (the Conclusion).
kinds of sentence according to structure
means to change the structure of sentence
The basic sentence structure in Korean is Subject Object Verb (SOV). Example: I like books. 좋아합니다 저는 = I (subject) 책을 = books (object) 좋아합니다 = like (verb)
What sentence structure is this? - It is a simple structure for an interrogative sentence.
The structure of the cake was high.