Question

Which of the following sentences with introductory elements use correct punctuation? Check all that apply. At the request of the governor’s office, the economic science lab produced various forecasting models. Introducing speakers before presentations, is always a challenge. Since he had finished his presentation outline he started designing presentation visuals. When the account manager returns from lunch, we’ll double-check the meeting time. On my desk between the paperweight and the clock, you’ll find the form you need. Between sessions the conference participants visited the cafeteria.

Answer 1

Answer:

CORRECT: At the request of the governor’s office, the economic science lab produced various forecasting models.

CORRECT: When the account manager returns from lunch, we’ll double-check the meeting time.

Explanation:

An introductory phrase is like a clause, but it doesn’t have its own subject and verb; it relies on the subject and verb in the main clause. It sets the stage for the main part of the sentence. When you use an introductory phrase in your writing, you’re signaling to the reader that the central message of the sentence is yet to come.

Introductory clause: After the meeting was over, the staff was exhausted. Introductory phrase: While getting ready for bed, Susan heard a knock at the door.

There are several types of introductory phrases, including prepositional phrases and appositive phrases. Sometimes a comma is necessary after an introductory phrase. Other times, the comma is optional, and there are also times when a comma should not be used.

It is important to note that a comma should always be used if the sentence could be misinterpreted otherwise.