Determine the correct verb form (have vs. has) in a sentence with a delayed subject and evaluate conflicting grammatical rules. | Step-by-Step Solution
Problem
Does the sentence 'There have or has been one crisis after another' use 'have' or 'has'? One AI suggests 'has' because the subject is singular, while another suggests 'have' because the meaning is plural. Determine which verb form is correct.
🎯 What You'll Learn
- apply subject-verb agreement rules in complex sentence structures
- distinguish between grammatical form and semantic meaning in verb choice
- understand how delayed subjects affect verb conjugation
Prerequisites: understanding of subject and verb identification, basic knowledge of singular and plural verb forms
💡 Quick Summary
Great question — this falls into the category of subject-verb agreement, which can get surprisingly tricky when sentences don't follow a straightforward Subject → Verb order! Here's something worth thinking about: when a sentence begins with "there," is "there" actually the grammatical subject, or could it be playing a different role? Try mentally restructuring the sentence to see if you can uncover what the *true* subject really is. Once you've identified it, ask yourself whether that subject is singular or plural — and remember that modifying phrases attached to a noun don't always change its grammatical number. Think about how you'd handle a simpler version, like "one student after another was/were leaving," and let that guide your instincts here. You've got the tools to work this one out — give that sentence flip a try and see what you find!
Step-by-Step Explanation
Subject-Verb Agreement with "There" Sentences 🎓
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1. What We're Solving
We need to figure out whether to use "have" or "has" in the sentence: > "There have/has been one crisis after another."
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2. The Approach
The key to solving this is understanding how "there" sentences work. The word "there" looks like a subject, but it's actually a placeholder — a grammatical decoy! The real subject is hiding later in the sentence, and that's what the verb must agree with.
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3. Step-by-Step Solution
Step 1: Identify the Grammatical Subject
The word "there" is an expletive (a filler word that delays the real subject).
To find the true subject, flip the sentence around: > "One crisis after another has/have been there."
Now the subject reveals itself: "one crisis after another"
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Step 2: Analyze the Subject Closely
The phrase is "one crisis after another."
Key observations:
- The grammatical head of this phrase is "one crisis"
- "One" signals → singular
- The phrase "after another" is a modifier — it describes a pattern, but it doesn't change the grammatical number of the subject
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Step 3: Grammar vs. Meaning
The phrase does suggest multiple crises in meaning. However, this important distinction applies:
> 📌 Grammar follows grammatical structure, not implied meaning.
Compare these examples:
- "One student after another was struggling." ✅
- "One car after another was damaged." ✅
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Step 4: Apply the Rule
Since the true subject is "one crisis" (singular), the verb must be singular too:
> ✅ "There has been one crisis after another."
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4. The Answer
"Has" is correct! ✅
> "There has been one crisis after another."
The verb agrees with the grammatical subject ("one crisis"), not with the implied or conceptual meaning of the phrase.
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5. Memory Tip 💡
"There" sentences — flip them to find the truth!"
Whenever you see a sentence starting with "there is/are" or "there has/have," mentally flip the sentence to reveal the real subject hiding at the back. Once you see it clearly, choosing the right verb becomes much easier!
> 🔄 "There has been one crisis..." > ➡️ "One crisis has been there..." → Singular → Has ✓
⚠️ Common Mistakes to Avoid
- choosing verb form based on the nearest noun rather than the true subject
- confusing grammatical number with semantic/collective meaning
- misidentifying which noun is the actual subject in inverted constructions
This explanation was generated by AI. While we work hard to be accurate, mistakes can happen! Always double-check important answers with your teacher or textbook.

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📷 Problem detected:
Solve: 2x + 5 = 13
Step 1:
Subtract 5 from both sides...
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