An embedded interrogative clause is a question that is embedded within a larger sentence, such as "I wonder where he went." An indirect question clause is a sentence that reports a question without using question marks, like "She asked if he was coming." A free relative clause is a clause that functions as a noun and is introduced by a wh-word, such as "I'll take whatever you give me." The key difference is that embedded interrogative clauses and indirect question clauses involve asking a question, while free relative clauses act as a noun phrase. **

A relative clause is a type of subordinate clause that provides additional information about a noun in the main clause. It typically begins with a relative pronoun such as "who," "which," or "that." For example, "The book that I read last night was really interesting." An indirect question clause, on the other hand, is a type of subordinate clause that reports a question without using the exact words of the original question. It often begins with an introductory phrase such as "I wonder," "She asked," or "He wanted to know." For example, "She asked where the nearest coffee shop was." In summary, the main difference between a relative clause and an indirect question clause is that a relative clause provides additional information about a noun, while an indirect question clause reports a question without using the exact words of the original question. **

To transform an object clause or a subject clause into a dependent clause, you can add a subordinating conjunction at the beginning of the clause. For example, changing "I know that he is coming" (object clause) to "I know when he is coming" (dependent clause). Another way is to remove the subject or object pronoun and change the verb form to make it dependent on the main clause. For instance, changing "She believes she can win" (subject clause) to "She believes she can win" (dependent clause). **

Yes, an infinitive clause is a type of subordinate clause. It functions as a single unit within a sentence and is dependent on the main clause for its meaning. Infinitive clauses typically begin with the word "to" followed by a verb, and they can serve various purposes such as expressing purpose, result, or obligation. **

Main clause-subordinate clause constructions are sentences that consist of a main clause and one or more subordinate clauses. The main clause is a complete sentence that can stand alone, while the subordinate clause depends on the main clause for its meaning and cannot stand alone. Subordinate clauses often begin with subordinating conjunctions such as "because," "although," "if," or "when," and they provide additional information or context to the main clause. These constructions allow for more complex and nuanced sentence structures, and they are commonly used in both spoken and written language. **

No, an adverbial clause cannot be a subject clause or an object clause. An adverbial clause functions as an adverb to modify a verb, adjective, or adverb in a sentence. Subject clauses and object clauses, on the other hand, serve as the subject or object of the main clause, respectively. Each type of clause has a specific grammatical function within a sentence. **

To determine if the main clause and subordinate clause are correct, you need to ensure that they are grammatically sound and that they make sense when combined. The main clause should be able to stand alone as a complete sentence, while the subordinate clause provides additional information but cannot stand alone. Checking for subject-verb agreement and proper punctuation between the two clauses can help confirm their correctness. **

A relative clause typically starts with a relative pronoun (such as who, whom, whose, which, or that) and provides more information about a noun in the main clause. A conjunctional clause, on the other hand, is introduced by a conjunction (such as and, but, or because) and connects two independent clauses. An interrogative clause is a type of clause that asks a question and is typically introduced by an interrogative pronoun (such as who, what, when, where, why, or how) or an interrogative adverb (such as how, when, or where). **