Common English Mistakes Made by Advanced Learners and How to Fix Them

You've been speaking English for years. You watch shows without subtitles. You read novels and write emails confidently. Yet sometimes, a sentence comes out that just feels off — and you can't quite explain why.

That's the plateau advanced learners hit. You're not making beginner errors like "he go" or "I am agree." But those small, subtle slip-ups? They still creep in. The good news is, these advanced English mistakes follow clear patterns. Once you spot them, you can fix them for good.

Here are the most common ones I see — and how to handle each.

1. Wrong Preposition After Certain Verbs

This one haunts even near-native speakers. You might say "discuss about" — but in English, it's just "discuss" (no preposition). Or "emphasize on" — but it's "emphasize" (direct object).

Same with:

• ❌ "She mentioned about the meeting." → ✅ "She mentioned the meeting."
• ❌ "He requested for a raise." → ✅ "He requested a raise."
• ❌ "I'll pay for the dinner." → (Wait — this one is correct. But "I'll pay the dinner" is wrong in British English, correct in American? Let me clarify.)

Actually, "pay for" is fine. But "pay the bill" (no preposition) is also fine. The tricky part is knowing which verbs take a preposition and which don't. My rule of thumb: when you learn a new verb, learn it with its most common partner. Discuss → no preposition. Talk about → needs "about." Explain → no preposition ("explain the situation," not "explain about the situation").

2. Subject-Verb Agreement in Complex Sentences

Advanced learners handle simple agreement fine. But throw in a long phrase between the subject and verb, and things get messy.

• ❌ "The list of requirements are on the table."
  The subject is "list" (singular), not "requirements."
  ✅ "The list of requirements is on the table."

• ❌ "Each of the participants were given a badge."
  "Each" is always singular.
  ✅ "Each of the participants was given a badge."

Trick? Ignore the words between the subject and verb. Find the head noun. Match it.

3. Confusing "Since" and "For"

This looks easy. "Since" = starting point. "For" = duration. Yet advanced learners still mix them up under pressure.

• ✅ "I've worked here since 2019." (point in time)
• ✅ "I've worked here for five years." (duration)

The error pops up when people use "since" with a duration:

• ❌ "I've been waiting since three hours." → ✅ "...for three hours."

If you can count the time, use "for." If it's a date or event, use "since."

4. Overusing the Passive Voice

The passive voice isn't wrong. But advanced learners often default to it, thinking it sounds more "academic" or "polite." The result? Bloated, unclear writing.

• ❌ "It was decided by the team that the project would be postponed."
• ✅ "The team decided to postpone the project."

Shorter. Clearer. The agent is known, so use active voice. Passive works best when the agent is unknown or unimportant ("The window was broken."). Otherwise, keep it active.

---

Let me show you these mistakes side by side so the pattern sticks better.

5. Misplacing Modifiers

A modifier that's too far from the word it describes can create confusion — or unintentional humor.

• ❌ "Driving to work, a deer crossed the road in front of my car."
  This suggests the deer was driving.
• ✅ "Driving to work, I saw a deer cross the road in front of my car."

Always put the modifier right next to what it describes. If the subject of the main clause doesn't match the modifier, rewrite the clause.

6. Overcorrecting — "Whom" Everywhere

Many advanced learners know that "whom" is the object form of "who." So they start using "whom" everywhere — even where "who" belongs.

• ❌ "The man whom I think is the manager..."
  "I think" is a clause. The subject of "is" is "who."
  ✅ "The man who I think is the manager..."

"Whom" is correct only when it receives the action ("To whom it may concern," "The person whom I met"). If you're not sure, "who" is almost always fine in everyday English. "Whom" sounds stiff unless used correctly.

7. Incorrect Conditional Structures (Mixed Conditionals)

Advanced learners know the three main conditionals. But mixing them up? That's where it gets sticky.

• ❌ "If I would have known, I would have come."
  (This is common even among native speakers, but it's not standard.)
  ✅ "If I had known, I would have come."

• ❌ "If I was you, I would accept."
  The subjunctive requires "were" for hypotheticals.
  ✅ "If I were you, I would accept."

Keep an ear out for "would have" in the if-clause. If you hear yourself saying it, swap it for "had."

---

How to Stop Making These Mistakes

Knowing the rule is one thing. Breaking the habit is another.

Read your writing aloud. Your ear catches awkwardness that your eyes skip. Use a highlighter to mark every preposition or conditional in your first draft — check each one. Keep a personal error log (just a note on your phone) with your top three recurring mistakes. Review it before you write.

Also, immersion matters. Read opinion pieces, listen to podcasts, and pay attention to how fluent speakers handle tricky spots. Not to copy blindly — but to build intuition.

---

Test Your English for Free

These are the kinds of mistakes that go unnoticed until someone points them out. Want to know where you stand? English Measure offers a free, full-skills English test — Reading, Listening, Writing, and Speaking. No sign-up hassle, no hidden costs. Just clear results that show you what to work on next.

👉 Take the free English test now →

---

📝 Related Practice Section

Writing Practice: Check out our free, AI-powered writing practice section to improve your English writing and grammar!

👉 Click here to start your free Writing Practice now!