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). **

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. **

The accompanying clause in direct speech can be either a main clause or a subordinate clause, depending on its role in the sentence. If the clause is expressing a complete thought and can stand alone as a sentence, then it is a main clause. However, if the clause is dependent on the rest of the sentence for its meaning and cannot stand alone, then it is a subordinate clause. It's important to consider the context and structure of the sentence to determine the role of the accompanying clause in direct speech. **

A relative clause is a type of subordinate clause that modifies a noun and is introduced by a relative pronoun such as "who," "which," or "that." A content clause, on the other hand, is a type of subordinate clause that functions as a noun and provides information about the content of the main clause. To determine whether a clause is a relative clause or a content clause, it is important to look at the function of the clause within the sentence and the role of the pronoun or conjunction that introduces it. **

To transform an object clause or a subject clause into a subordinate clause, you need to introduce a subordinating conjunction at the beginning of the clause. For example, if you have the object clause "I know that she is coming," you can transform it into a subordinate clause by saying "I know she is coming." Similarly, if you have the subject clause "That she is coming is known to me," you can transform it into a subordinate clause by saying "It is known to me that she is coming." This change makes the clause dependent on the main clause and changes its position within the sentence. **

To convert an object clause or a subject clause into a subordinate clause, you need to introduce a subordinating conjunction such as 'that', 'whether', 'if', 'because', 'since', etc. For example, "I know that he is coming" or "She said whether she should go." This subordinating conjunction will connect the clause to the main clause and make it dependent on the main clause. This way, the object or subject clause becomes a subordinate clause within the sentence. **

To determine if a sentence is an object clause or a subject clause, we need to identify its function in the sentence. A subject clause typically functions as the subject of the sentence, while an object clause functions as the direct object of the verb. If the sentence is the main focus of the sentence and is performing the action, it is likely a subject clause. If the sentence is receiving the action of the verb, it is likely an object 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. **