We can underline the introductory phrases or dependent clauses and add a comma where needed considering that they will likely have subordinating conjunctions.
- When my favorite television show comes on, I'll watch it eagerly.
- Alicia Perez gave a speech after she was elected class president.
- At some time between midnight and dawn, an asteroid will pass by Earth.
Four original sentences using introductory phrases or dependent clauses are:
- Because she could not answer the phone, Alice ended up missing her chance.
- At the beginning of May, I saw my best friend for the last time.
- After thinking she had lost all her money, Susie was given her wallet back by a stranger.
- While walking down the street, Marcus saw his wife walking towards him.
What is an introductory phrase?
As the name suggests, an introductory phrase is a group of words that introduces the main clause. It appears before the main clause and provides some extra information about it.
For example, in the sentence "At some time between midnight and dawn, an asteroid will pass by Earth," the introductory phrase is "At some time between midnight and dawn." It provides information about the time when the action will take place.
What is a dependent clause?
A dependent clause contains a subject and a predicate. It begins with a subordinating conjunction, such as:
Dependent clauses can function as introductory phrases. That is the case in "When my favorite television show comes on, I'll watch it eagerly," where the dependent clause "When my favorite television show comes on" also introduces the main clause.
Finally, whenever an introductory phrase has four words or more, we should place a comma after it. Also, commas should always be placed after dependent clauses when they come first in the sentence.
With the information above in mind, we can conclude that the answers provided above are correct.
Learn more about dependent clauses here:
https://brainly.com/question/798413
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