Which sentence uses a comma after an introductory phrase?

Which sentence uses a comma after an introductory phrase?

• A. After the rain stops we will go outside.
• B. After the rain stops we will go outside again.
• C. After the rain stops, we will go outside.
• D. After the rain stops, we go outside.

Answer: (C)

Using a comma after an introductory phrase: when a sentence starts with a phrase such as “After the rain stops,” that introductory part sets up the condition for what comes next. The comma gives a clear pause and marks the boundary before the main clause. In this sentence, “After the rain stops, we will go outside,” the comma correctly separates the introductory phrase from the main clause, making it clear that going outside happens after the rain stops. Without the comma, the sentence becomes harder to read and the relation between the stopping of the rain and going outside is less obvious. The other options either omit the comma after the introductory phrase or use a structure that doesn’t cleanly show that timing.

Using a comma after an introductory phrase: when a sentence starts with a phrase such as “After the rain stops,” that introductory part sets up the condition for what comes next. The comma gives a clear pause and marks the boundary before the main clause. In this sentence, “After the rain stops, we will go outside,” the comma correctly separates the introductory phrase from the main clause, making it clear that going outside happens after the rain stops. Without the comma, the sentence becomes harder to read and the relation between the stopping of the rain and going outside is less obvious. The other options either omit the comma after the introductory phrase or use a structure that doesn’t cleanly show that timing.