Welcome to the "So What?" of Writing

You’ve found great evidence. You’ve written a solid thesis. But how do you get your reader to see the connection between them? That’s where commentary comes in. Think of commentary as the "bridge" that connects your evidence to your argument. Without it, your evidence is just a pile of facts sitting on the page.

In this chapter, we are focusing on Skill 6.A: how to develop a line of reasoning and use commentary to explain it throughout your argument. This is the secret sauce to getting a high score on Row B of the AP exam rubric!

What Exactly is Commentary?

Commentary is your own original thought. It is the part of your essay where you stop quoting or paraphrasing others and start explaining why that information matters. In AP Lang, commentary should do two things:

  1. Explain how the evidence supports your specific claim (the point of your paragraph).
  2. Explain why that claim helps prove your overarching thesis (the big goal of your essay).

The Golden Rule: If you can remove your evidence and your paragraph still makes sense, you have plenty of commentary. If you remove your evidence and the paragraph disappears, you’re probably just summarizing.

Commentary vs. Summary: Don’t Get Caught in the Trap!

Many students struggle because they accidentally summarize their evidence instead of analyzing it. Let’s look at the difference:

Summary: "The writer says that plastic is bad for the ocean and lists three types of fish that are dying." (This just repeats what is already in the text.)

Commentary: "By specifically naming the types of fish affected, the writer creates a sense of local urgency, forcing the audience to realize that the environmental damage isn't just a global concept, but a direct threat to their own food sources." (This explains the effect and the reasoning.)

The "Line of Reasoning" Chain

A line of reasoning is the logical path your argument takes from start to finish. Imagine a chain: each link is a claim supported by evidence and commentary. If one link doesn't connect to the next, the whole chain breaks.

Your commentary acts as the "weld" that holds these links together. Every time you finish explaining a piece of evidence, you should ask yourself: "How does this step lead me closer to proving my thesis?"

Note: For more on how the whole chain fits together, check out the chapter "Line of reasoning and whether it supports the thesis."

How to Write Effective Commentary: Step-by-Step

If you're stuck staring at a quote, try this three-step process to build your commentary:

Step 1: Identify the "What"

Look at your evidence. What specific detail, word choice, or fact stands out?
Example: The writer uses a metaphor comparing the city to a "beehive."

Step 2: Explain the "How"

How does this specific detail work on the reader's mind? What does it make them feel, think, or realize?
Example: This comparison emphasizes the constant, mechanical busyness of the citizens and suggests they lack individual agency.

Step 3: Connect to the "Why" (The Thesis)

Why does the writer want the reader to feel that way? How does it help their overall goal?
Example: By portraying the city this way, the writer justifies their later argument that urban life is soul-crushing and that a return to nature is necessary for human happiness.

Quick Tips and Tricks

The "So What?" Test: After you write a sentence of commentary, imagine a grumpy person standing over your shoulder asking, "So what?" Your next sentence should answer that question. Keep answering "so what?" until you’ve fully connected your point to your thesis.

Use "Analysis Verbs": Avoid saying "This shows..." over and over. Try these instead:

  • Illuminates (The evidence illuminates the hidden dangers of...)
  • Underscores (This fact underscores the urgency of...)
  • Provokes (The writer’s tone provokes a sense of guilt in the audience...)
  • Justifies (This logical appeal justifies the need for change...)
  • Characterizes (The description characterizes the opposition as...)

Common Mistakes to Avoid

  • The "Hit and Run" Quote: Dropping a quote into a paragraph and moving immediately to the next point without explaining it.
  • Restating the Quote: Using your commentary to say "In other words..." followed by a simpler version of the quote. (The reader already understood the quote; they need to know why you used it!)
  • Vague Connections: Saying "This helps the writer's purpose" without saying what that purpose is or how it helps.

Key Takeaways

1. Commentary is the "Bridge": It is the logic that connects your evidence to your claim and your claim to your thesis.

2. Line of Reasoning: Commentary ensures your argument follows a clear, logical path that the reader can track from beginning to end.

3. Focus on Effect: High-level commentary focuses on how the evidence influences the audience’s beliefs, values, or needs.

4. Avoid Summary: If you are just retelling what happened in the text, you aren't writing commentary yet. Focus on the why!

Don't worry if this feels difficult at first! Explaining your own thinking is one of the hardest parts of writing. The more you practice asking "Why did the author choose this specific piece of evidence?", the more natural your commentary will become.