An introductory phrase is typically set off by a comma when it precedes the main clause of a sentence. The comma indicates a pause after the introductory phrase, helping to clarify the sentence's structure and improve readability. Here are some examples:
- Examples of Introductory Phrases:
- Prepositional Phrase: "After the meeting, we went out for lunch."
- Participial Phrase: "Running late, she hurried to the bus stop."
- Adverbial Phrase: "In the morning, I like to exercise."
In these cases, the comma is used to separate the introductory phrase from the main part of the sentence, enhancing clarity. However, if the introductory phrase is short and the sentence is clear without a comma, it may be omitted based on style preferences.