Explanations:Comparative adjectives are used to compare two things and indicate that one thing has more or less of a quality than the other. In English, the comparative form of adjectives is typically formed by adding "-er" to the end of the adjective for one-syllable adjectives, or by using "more" before the adjective for adjectives with two or more syllables. However, there are exceptions and irregular forms, such as "good" (better) and "bad" (worse).
In the given sentence, "Chennai is one of the largest cities in India," the adjective "largest" is a superlative form, indicating that Chennai is among the biggest cities in India. To compare Chennai with other cities in a comparative form, we need to use "larger" instead of "largest." The correct comparative form of "large" is "larger," not "large-er."
The sentence "Chennai is larger than most other cities in India" correctly uses the comparative form to indicate that Chennai is bigger than most other cities in India. This form is appropriate because it compares Chennai with other cities, showing that Chennai has a greater size than the majority of them.
It is important to note that the comparative form "larger" is used when comparing two things, while the superlative form "largest" is used when comparing more than two things. In this context, since we are comparing Chennai with other cities, the comparative form is the correct choice.
Incorrect forms such as "large than" or "as large as" do not convey the intended meaning accurately. "Large than" is grammatically incorrect, and "as large as" suggests equality rather than a comparison of size. Therefore, the correct comparative form "larger than" is the appropriate choice to express that Chennai is bigger than most other cities in India.