Here's a breakdown:
* What are introductory words or expressions? They are words or phrases that appear at the beginning of a sentence, typically setting the stage for the main clause. Some common examples include:
* Conjunctive Adverbs: However, therefore, nevertheless, moreover, furthermore, etc.
* Prepositional Phrases: In the morning, after the game, because of the rain, etc.
* Participial Phrases: Running late, having finished the work, driven by ambition, etc.
* Infinitive Phrases: To win the game, to be happy, to succeed, etc.
* Absolute Phrases: The sun shining brightly, her heart pounding, their heads held high, etc.
* Why are they important? They add variety and clarity to your writing. They help guide the reader through your ideas and make your sentences more interesting.
Examples:
* Conjunctive Adverb: *However, the team managed to win the game.*
* Prepositional Phrase: *After the party, we went for a walk.*
* Participial Phrase: *Running late, I missed the bus.*
* Infinitive Phrase: *To win the championship, they need to work hard.*
* Absolute Phrase: *The sun shining brightly, we enjoyed our picnic.*
Key Point: Remember to separate introductory phrases from the main clause with a comma, unless the introductory phrase is very short (e.g., *After the game, we went home.* But *Yesterday we went home.*).