Do I need a comma after introductory phrases? Unsure about these sentences
I'm working on an essay for my English class, and I'm confused about when to use a comma after an introductory phrase. For example, should it be:
"After a long day I like to relax." or "After a long day, I like to relax."?
Another example: "In the morning I drink coffee." versus "In the morning, I drink coffee." I've seen both versions online and now I'm not sure which is correct. Could someone explain the rule?
Context:
ESL student, American English
What to Know
| Question You Likely Still Have | Direct Answer | How To Apply It |
|---|---|---|
| What is the core rule for need comma after introductory? | Here’s how the pattern works: Pattern: [Introductory phrase], [Main sentence] Examples: "Before dinner, we wash our hands." "Because it was raining, the event was canceled." Compa… | When using introductory phrases in American English, the common pattern is: Introductory phrase, main clause . |
| How do I apply need comma after introductory in a sentence like mine? | Let’s look at how commas after introductory phrases clarify sentences by comparing similar sentences side by side: Compare: Without comma: "Under the old bridge people camped for… | If ever unsure, add the comma—it’s rarely wrong in American English. |
| What mistakes should I avoid with need comma after introductory? | If ever unsure, add the comma—it’s rarely wrong in American English. | Self-editing tip: If your sentence begins with a phrase (not the main subject/verb), add a comma before the subject starts. |
3 Answers
When using introductory phrases in American English, the common pattern is: Introductory phrase, main clause. The comma helps readers pause before the main idea. Here’s how the pattern works:
Pattern:
- [Introductory phrase], [Main sentence]
Examples:
- "Before dinner, we wash our hands."
- "Because it was raining, the event was canceled."
Compare:
- Incorrect: "Before dinner we wash our hands."
- Correct: "Before dinner, we wash our hands."
Practice tip: Try writing three sentences that begin with a time phrase (e.g., "After school,"), and add the comma after each introductory phrase.
Self-editing tip: If your sentence begins with a phrase (not the main subject/verb), add a comma before the subject starts. If ever unsure, add the comma—it’s rarely wrong in American English.
Let’s look at how commas after introductory phrases clarify sentences by comparing similar sentences side by side:
Compare:
- Without comma: "Under the old bridge people camped for shelter."
- With comma: "Under the old bridge, people camped for shelter."
Why? The comma marks the end of the introductory information and helps prevent misreading.
Another pair:
- Without comma: "To succeed in English you must practice every day."
- With comma: "To succeed in English, you must practice every day."
Practice: Find a sentence from your essay that starts with a phrase. Write it with and without a comma after the introductory part, and see which is clearer.
Correction strategy: Read your sentence aloud. If you naturally pause after the beginning phrase, a comma is usually needed.
A helpful way to decide if you need a comma after an introductory phrase is to notice if the first part of the sentence gives background information for the main action. If so, use a comma.
Examples:
- "During the winter months, many animals hibernate."
- "If you have any questions, feel free to email me."
Without the comma:
- "During the winter months many animals hibernate."
- "If you have any questions feel free to email me."
Tip: Almost always, if your sentence starts with a phrase about time, reason, or condition, add a comma before the main part.
Quick practice: Write two sentences. Start one with a time phrase, the other with a condition (like "If..."). Insert the comma after the introductory phrase.
Want to answer this question? Log in or create an account.