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. **

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. **

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. **

Main clauses can be recognized by their ability to stand alone as complete sentences, containing a subject and a predicate. Subordinate clauses, on the other hand, cannot stand alone as complete sentences and are dependent on the main clause for their meaning. They often begin with subordinating conjunctions such as "because," "although," "while," or "if." Additionally, subordinate clauses often function as adverbial, adjectival, or nominal clauses, providing additional information about the main clause. **

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. **

One way to underline subordinate clauses is to use a single underline for the entire clause. This helps to visually separate the subordinate clause from the main clause. Another option is to use a different color or font style, such as italics, to highlight the subordinate clause. Whichever method you choose, make sure it is consistent throughout your writing to maintain clarity and coherence. **

A main clause is a complete sentence that can stand alone and express a complete thought. It contains a subject and a predicate. A subordinate clause, on the other hand, cannot stand alone as a complete sentence because it does not express a complete thought. It depends on the main clause to give it meaning and is usually introduced by a subordinating conjunction. Subordinate clauses often provide additional information or context to the main clause. **

Subordinate clauses can be underlined by identifying the main clause first and then identifying the dependent clause that is connected to it. Once you have identified the subordinate clause, you can underline it to show that it is dependent on the main clause for meaning. This helps to visually separate the subordinate clause from the main clause and highlight its role in the sentence structure. **