Conjunctional clauses are dependent clauses that are introduced by a conjunction, such as "because," "although," or "while." They provide additional information about the main clause in a sentence. Relative clauses are also dependent clauses that provide more information about a noun in the main clause. They are introduced by relative pronouns like "who," "which," or "that." Demonstrative clauses are dependent clauses that function as adjectives and provide more information about a noun in the main clause. They are introduced by demonstrative pronouns like "this," "that," "these," or "those." Infinitive clauses are dependent clauses that are formed with an infinitive verb (to + base form of the verb). They can function as nouns, adjectives, or adverbs in a sentence. **

No, conjunctive clauses are not always adverbial clauses. While adverbial clauses are a type of conjunctive clause that function as adverbs to modify verbs, adjectives, or other adverbs, there are also other types of conjunctive clauses. For example, there are conjunctive clauses that function as noun clauses, such as in "I know that you are busy." In this sentence, "that you are busy" is a conjunctive clause functioning as a noun clause, not an adverbial clause. Therefore, conjunctive clauses can serve various grammatical functions beyond just adverbial clauses. **

Relative clauses are clauses that provide additional information about a noun in the main clause. They are introduced by relative pronouns such as "who," "which," "that," and "whom." For example, in the sentence "The book that I read is very interesting," the relative clause "that I read" provides more information about the noun "book." Conjunctional clauses, on the other hand, are clauses that are connected to the main clause by conjunctions such as "and," "but," "or," "if," and "because." They can express relationships such as addition, contrast, alternative, condition, and cause. For example, in the sentence "I will go to the park if the weather is nice," the conjunctional clause "if the weather is nice" expresses a condition for the action in the main clause. **

French conditional clauses, also known as si-clauses, are used to express a hypothetical situation and its potential outcome. They consist of two parts: the si clause (if clause), which describes the condition, and the main clause, which describes the potential result. The si clause is typically formed using the conjunction "si" followed by the imperfect tense or the pluperfect tense, while the main clause is formed using the conditional tense. These clauses are commonly used to talk about what would happen in certain situations if a specific condition were met. **

Subordinate clauses can be rewritten as main clauses by removing the subordinating conjunction and making any necessary adjustments to the verb tense or word order. For example, the subordinate clause "because she was tired" can be rewritten as the main clause "she was tired." This transformation allows the subordinate clause to stand alone as a complete sentence. Additionally, any pronouns or other words that were dependent on the subordinating conjunction may need to be adjusted to ensure the new main clause is grammatically correct. **

Main clauses can stand alone as complete sentences, while subordinate clauses cannot. Subordinate clauses often begin with subordinating conjunctions such as "although," "because," "if," "when," or "while." They also often contain a subject and a verb, but they do not express a complete thought on their own. Main clauses, on the other hand, express a complete thought and can function as independent sentences. By identifying these characteristics, one can recognize main and subordinate clauses in a sentence. **

Adverbial clauses can be used as subordinate clauses to provide additional information about the main clause. They can modify the verb in the main clause by expressing time, place, manner, condition, reason, purpose, or concession. For example, in the sentence "She went to bed after she finished her homework," the adverbial clause "after she finished her homework" provides information about the timing of the main action "She went to bed." Adverbial clauses are introduced by subordinating conjunctions such as after, before, while, since, because, if, although, etc. **

To transform a subordinate clause into a main clause, you need to make sure that the clause can stand alone as a complete sentence. This means adding a subject and a verb to the clause if it doesn't already have them. You may also need to adjust the word order or add any necessary punctuation. Once these changes are made, the subordinate clause will become a main clause that can function independently within a sentence. **