Sentence clause structure - wikipedia Sentence clause structure In grammar, sentence clause structure is the classification of sentences based on the number and kind of clauses in their syntactic structure. Such division is an element of traditional grammar. Contents 1 Types 2 Simple sentences 3 Compound sentences 4 Complex and compound - complex sentences 5 Incomplete sentence 6 Run - on ( fused ) sentences 7 See also 8 References 9 External links Types A simple sentence consists of only one clause. A compound sentence consists of two or more independent clauses. A complex sentence has at least one independent clause plus at least one dependent clause. A set of words with no independent clause may be an incomplete sentence, also called a sentence fragment. A sentence consisting of at least one dependent clauses and at least two independent clauses may be called a complex - compound sentence or compound - complex sentence. Sentence 1 is an example of a simple sentence. Sentence 2 is compound because `` so '' is considered a coordinating conjunction in English, and sentence 3 is complex. Sentence 4 is compound - complex ( also known as complex - compound ). Example 5 is a sentence fragment. I like pumpkin pie. I do n't know how to bake, so I buy my bread. I enjoyed the apple pie that you bought for me. The dog lived in the garden, but the cat, who was smarter, lived inside the house. What an idiot. The simple sentence in example 1 contains one clause. Example 2 has two clauses ( I do n't know how to bake and I buy my bread ), combined into a single sentence with the coordinating conjunction so. In example 3, I enjoyed the apple pie is an independent clause, and that you bought for me is a dependent clause ; the sentence is thus complex. In sentence 4, The dog lived in the garden and the cat lived inside the house are both independent clauses ; who was smarter is a dependent clause. Example 5 features a noun phrase but no verb. It is not a grammatically complete clause. Simple sentences A simple sentence structure contains one independent clause and no dependent clauses. I run. This simple sentence has one independent clause which contains one subject, I, and one predicate, run. The girl ran into her bedroom. This simple sentence has one independent clause which contains one subject, girl, and one predicate, ran into her bedroom. The predicate is a verb phrase that consists of more than one word. In the backyard, the dog barked and howled at the cat. This simple sentence has one independent clause which contains one subject, dog, and one predicate, barked and howled at the cat. This predicate has two verbs, known as a compound predicate : barked and howled. This compound verb should not be confused with a compound sentence. In the backyard and at the cat are prepositional phrases. Compound sentences A compound sentence is composed of at least two independent clauses. It does not require a dependent clause. The clauses are joined by a coordinating conjunction ( with or without a comma ), a semicolon that functions as a conjunction, a colon instead of a semicolon between two sentences when the second sentence explains or illustrates the first sentence and no coordinating conjunction is being used to connect the sentences, or a conjunctive adverb preceded by a semicolon. A conjunction can be used to make a compound sentence. Conjunctions are words such as for, and, nor, but, or, yet, and so. Examples : He is going fishing on Friday is an independent clause. `` He '' is the subject, `` is going '' is the action, and a complete thought is expressed. The coordinator `` and '' is used, and a comma is correctly used before the `` and. '' http://www.yourdictionary.com/ I started on time, but I arrived late. I will accept your offer or decline it ; these are the two options. The law was passed : from April 1, all cars would have to be tested. The war was lost ; consequently, the whole country was occupied. The use of a comma to separate two independent clauses without the addition of an appropriate conjunction is called a comma splice and is generally considered an error ( when used in the English language ). Example : The sun was shining, everyone appeared happy. Complex and compound - complex sentences Main article : Dependent clause A complex sentence has one or more dependent clauses ( also called subordinate clauses ). Since a dependent clause can not stand on its own as a sentence, complex sentences must also have at least one independent clause. In short, a sentence with one or more dependent clauses and at least one independent clause is a complex sentence. A sentence with two or more independent clauses plus one or more dependent clauses is called compound - complex or complex - compound. In addition to a subject and a verb, dependent clauses contain a subordinating conjunction or similar word. There are a large number of subordinating conjunctions in English. Some of these give the clause an adverbial function, specifying time, place, or manner. Such clauses are called adverbial clauses. When I stepped out into the bright sunlight, from the darkness of the movie house, I had only two things on my mind. ( S.E. Hinton, The Outsiders ) This complex sentence contains an adverbial clause, When I stepped out into the bright sunlight from the darkness of the movie house. The adverbial clause describes when the action of the main clause, I had only two things on my mind, took place. A relative clause is a dependent clause that modifies a noun or noun phrase in the independent clause. In other words, the relative clause functions similar to an adjective. Let him who has been deceived complain. ( Miguel de Cervantes, Don Quixote ) You, who have never known your family, see them standing around you. ( J.K. Rowling, Harry Potter and the Sorcerer 's Stone ) In the first example, the restrictive relative clause who has been deceived specifies or defines the meaning of him in the independent clause, Let him complain. In the second example, the non-restrictive relative clause who have never known your family describes you in the independent clause, You see them standing around you. A noun clause is a dependent clause that functions like a noun. A noun clause may function as the subject of a clause, or as a predicate nominative or an object. What she had realised was that love was that moment when your heart was about to burst. ( Stieg Larsson, The Girl with the Dragon Tattoo ) In this sentence the independent clause contains two noun clauses. The noun clause What she had realized serves as the subject of the verb was, and that love was that moment serves as complement. The sentence also contains an adverbial clause, when your heart was about to burst. Incomplete sentence An incomplete sentence, or sentence fragment, is a set of words which does not form a complete sentence, either because it does not express a complete thought or because it lacks some grammatical element, such as a subject or a verb. A dependent clause without an independent clause is one example of an incomplete sentence. Some prescriptive grammars consider sentences starting with a conjunction such as but or and to be incomplete sentences, but this style prescription has `` no historical or grammatical foundation ''. Computer grammar checkers often highlight incomplete sentences. If the context is clear from the rest of the paragraph, however, an incomplete sentence may be considered perfectly acceptable English. Run - on ( fused ) sentences A run - on or fused sentence consists of two or more independent clauses ( i.e., clauses with subject and predicate ) that are joined without any appropriate punctuation. An example of such a grammatically incorrect sentence could be, `` It is nearly half past five we can not reach town before dark. '' Some common remedies would be to separate the two independent clauses ( between `` five '' and `` we '' ) with either a period (... five. We... ), a comma and conjunction (... five, and we... ), or a semicolon (... five ; we... ). Joining the two independent clauses with only a comma is actually another common grammatical error, the comma splice. James Joyce 's novel Ulysses employs streams of consciousness, which takes literary license by intentionally breaking this grammatical rule by use of long, punctuation - free, run - on sentences, particularly in the final chapter `` Penelope ''. In general, run - on sentences occur when two or more independent clauses are joined without using a coordinating conjunction ( i.e. for, and, nor, but, or, yet, so ) or correct punctuation ( i.e. semicolon, dash, or period ),. A run - on sentence can be as short as four words, for instance : I drive she walks., or even I drive, she walks, because in this case, there are two subjects paired with two intransitive verbs. An imperative sentence like `` Run walk '' can be a run - on even if it only has two words. While some sources view comma splices as a form of run - on sentence, others limit the term to independent clauses that are joined without punctuation. See also Linguistics portal Comma splice References ^ Jump up to : Huddleston, Rodney ( 1984 ). Introduction to the Grammar of English. Cambridge University Press. ISBN 978 - 0 - 521 - 29704 - 2. ^ Jump up to : Rozakis, Laurie ( 2003 ). The Complete Idiot 's Guide to Grammar and Style. Alpha. pp. 167 -- 168. ISBN 1 - 59257 - 115 - 8. Jump up ^ Sinclair, Christine ( 2007 ). Grammar : Getting it Right. McGraw - Hill. ISBN 978 - 0 - 335 - 22008 - 3. Jump up ^ e.g. H.W. Fowler in Modern English Usage on BUT, p. 60 in the first edition. Jump up ^ The Chicago Manual of Style ( 16th ed. ). Chicago : University of Chicago Press. 2010. p. 257. ISBN 978 - 0 - 226 - 10420 - 1. Jump up ^ `` Sentence fragments ''. commnet.edu. 20 December 2015. Retrieved 22 March 2014. ^ Jump up to : Berry, Chris ; Brizee, Allen ( 2006 - 08 - 31 ). `` Runons -- Comma Splices Fused Sentences ''. Retrieved 2008 - 01 - 24. ^ Jump up to : `` Run - on Sentences, Comma Splices ''. Retrieved 2008 - 01 - 24. Jump up ^ `` English Grammar Lesson - Run - Ons ! - ELC ''. ELC - English Language Center. 2017 - 05 - 19. Retrieved 2017 - 09 - 14. Jump up ^ Hairston, Maxine ; Ruszkiewicz, John J ; Friend, Christy ( 1998 ). `` The Scott Foresman Handbook for Writers '' ( 5th ed. ). New York : Longman : 509. External links Look up incomplete sentence in Wiktionary, the free dictionary. `` Sentence Types ''. Online Writing Lab. Purdue University. 1995. Retrieved 2 February 2014. Campos Noguera, José Manuel. `` Complex sentences ''. English Post : English Language Learning and Teaching. Retrieved 2 February 2014. `` Independent and Dependent Clauses '' ( PDF ). Philosophy of language Philosophers Plato ( Cratylus ) Gorgias Confucius Xunzi Aristotle Stoics Pyrrhonists Scholasticism Ibn Rushd Ibn Khaldun Thomas Hobbes Gottfried Wilhelm Leibniz Johann Herder Ludwig Noiré Wilhelm von Humboldt Fritz Mauthner Paul Ricœur Ferdinand de Saussure Gottlob Frege Franz Boas Paul Tillich Edward Sapir Leonard Bloomfield Zhuangzi Henri Bergson Lev Vygotsky Ludwig Wittgenstein Philosophical Investigations Tractatus Logico - Philosophicus Bertrand Russell Rudolf Carnap Jacques Derrida Of Grammatology Limited Inc Benjamin Lee Whorf Gustav Bergmann J.L. Austin Noam Chomsky Hans - Georg Gadamer Saul Kripke A.J. Ayer G.E.M. Anscombe Jaakko Hintikka Michael Dummett Donald Davidson Roger Gibson Paul Grice Gilbert Ryle P.F. Strawson Willard Van Orman Quine Hilary Putnam David Lewis John Searle Joxe Azurmendi Scott Soames Stephen Yablo John Hawthorne Stephen Neale Paul Watzlawick Theories Causal theory of reference Contrast theory of meaning Contrastivism Conventionalism Cratylism Deconstruction Descriptivist theory of names Direct reference theory Dramatism Expressivism Linguistic determinism Logical atomism Logical positivism Mediated reference theory Nominalism Non-cognitivism Phallogocentrism Quietism Relevance theory Semantic externalism Semantic holism Structuralism Supposition theory Symbiosism Theological noncognitivism Theory of descriptions Verification theory Concepts Ambiguity Linguistic relativity Meaning Language Truth - bearer Proposition Use -- mention distinction Concept Categories Set Class Intension Logical form Metalanguage Mental representation Principle of compositionality Property Sign Sense and reference Speech act Symbol Entity Sentence Statement more... 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Question: when does a sentence become a run on
Answer: two or more independent clauses (i.e., clauses with subject and predicate) that are joined without any appropriate punctuation