Synthesis of Sentences

Compound sentence

Coordinating conjunctions (for, and, nor, but, or, yet, so) are used to join two independent clauses to form compound sentences. Each clause can stand alone as a complete sentence. Simple sentences have one clause, complex sentences have one independent and one dependent clause, and compound-complex sentences have multiple independent and at least one dependent clause.

The teacher gave us difficult homework.

When combining sentences using an adjective, we convert the descriptive sentence into an adjective that modifies the noun. 'The homework was difficult' becomes 'difficult homework'. This creates a simple sentence with one finite verb. Option A uses a coordinating conjunction, option C uses a relative pronoun for complex sentences, and option D uses a participle construction incorrectly.

although

The subordinating conjunction 'although' is used to show contrast or concession in complex sentences. It means 'in spite of the fact that'. For example: 'Although it was raining, we went for a walk.' 'Because' shows reason, 'when' shows time, and 'since' can show time or reason - but none of these show contrast like 'although' does.

A clause that acts as a noun in a sentence

A noun clause is a dependent clause that functions as a noun in a sentence. It can act as a subject, object, or complement. Noun clauses often begin with words like 'that', 'what', 'who', 'when', 'where', 'why', 'how', 'whether', or 'if'. Option A describes an adjective clause, option C describes an adverbial clause, and option D specifically describes adverbial clauses of time and place.