Phrasal Verbs: What They Are and How to Use Them
A verb plus a small word (up, off, after) that together often mean something new.
Word Origins & Etymology
A phrasal verb combines a verb with a particle — an adverb or preposition like up, off, on, out, after — to form a single unit of meaning.
The meaning is often idiomatic: "give up" (quit) has little to do with "give," and "look after" (care for) is not literally looking. That is what makes them tricky.
Because the meaning is rarely the sum of its parts, the most reliable approach is to learn each phrasal verb as a single vocabulary item, along with its grammar (separable or not).
⚡ Quick Answer
Its meaning is often idiomatic: "give up" = quit, "put off" = postpone, "look after" = take care of.
Memory Trick: Treat the whole phrase as one word. Do not translate the parts — learn "put off" as "postpone," the way you learned any other verb.
🔑 Key Takeaway
Phrasal verbs come in types: transitive (need an object) or intransitive, and separable (object can split the verb) or inseparable. With a pronoun object, separable verbs must split: "turn it off," not "turn off it."
| Phrasal verb | Meaning | Type | Example |
|---|---|---|---|
| give up | quit / stop trying | separable | "Don’t give up." |
| put off | postpone | separable | "Put off the meeting." |
| look after | take care of | inseparable | "Look after the kids." |
| run into | meet by chance | inseparable | "I ran into Sam." |
| take off | leave the ground / remove | separable | "The plane took off." |
Quick Comparison
| Type | What it means | Quick Check |
|---|---|---|
| Transitive | Needs an object | Can you ask "____ what?" Use an object (turn off the TV). |
| Intransitive | Takes no object | Does it stand alone (the plane took off)? No object needed. |
| Separable | Object can go in the middle | With a pronoun, it must split: "turn it off." |
Separable Phrasal Verbs
With a separable phrasal verb, a noun object can go either after the particle or between the verb and particle. But a pronoun object must go in the middle.
- Turn off the light. / Turn the light off. (noun: both fine)
- Turn it off. (pronoun: must split)
- Not: "Turn off it."
Inseparable Phrasal Verbs
With an inseparable phrasal verb, the object always comes after the whole phrase — you cannot split it, even with a pronoun.
- She looks after her parents. / She looks after them.
- Not: "She looks them after."
Intransitive Phrasal Verbs
Some phrasal verbs take no object at all.
- The plane took off on time.
- Please sit down.
- My car broke down.
Because the rules vary by verb, learn each one with its type. The idea overlaps with collocations in do vs make and the verb basics in what is a verb.
Common Mistakes
Mistake #1: pronoun after the particle (separable)
✗ Wrong: Can you turn off it?
✓ Right: Can you turn it off?
Reason: With a separable phrasal verb, a pronoun object must go in the middle.
Mistake #2: splitting an inseparable verb
✗ Wrong: I ran Sam into at the store.
✓ Right: I ran into Sam at the store.
Reason: "Run into" is inseparable; the object stays after the phrase.
Mistake #3: translating the parts literally
✗ Wrong: She gave up her bag to the desk. (meaning quit)
✓ Right: She gave up trying. (gave up = quit)
Reason: Phrasal-verb meaning is idiomatic, not the sum of the words.
Mistake #4: wrong particle
✗ Wrong: Please fill the form. (a form)
✓ Right: Please fill out (or fill in) the form.
Reason: The particle is part of the meaning; "fill out a form" is the set phrase.
🎯 Test Your Knowledge
1. Pick the correct order:
2. "Give up" means to ____.
3. Which is correct?
4. "Put off" the meeting means to ____ it.
5. Is "the plane took off" transitive or intransitive?
See It Live: Our Engine Flags a Real Mistake
This checker runs locally as you type, no screenshot involved. The starter sentence puts a pronoun after a separable phrasal verb; fix the word order or test your own.
Expected correction: Could you please turn it off before you leave?
Honest limits: the engine catches some word-order slips, but separable vs inseparable depends on the specific verb. Learn each phrasal verb with its type, then run the check.
Frequently Asked Questions
What is a phrasal verb?
What is the difference between separable and inseparable?
Why can’t I say "turn off it"?
How do I learn phrasal verbs?
Are phrasal verbs informal?
Real-World Examples
We had to put off the launch.
I ran into an old friend downtown.
Can you look after the dog this weekend?
The flight took off an hour late.
Please fill out the application.
Don’t give up so easily.
Please hand in it by Friday.
I came my parents across in the photos.
Why Phrasal Verbs Are Hard
Phrasal verbs combine two obstacles: their meanings are idiomatic, so the parts do not add up, and their grammar varies — some split, some do not, some take objects, some do not. There is no single rule that covers them all. The practical path is to learn each phrasal verb as a unit with its meaning and type, and to get plenty of exposure through reading and listening.
Phrasal verbs are learned the way collocations are — as set units, like the pairings in do vs make. Build the verb foundation in what is a verb.
Related Articles
- What Is a Verb? — The base these multi-word verbs build on
- Do vs Make — Another set of verb patterns learned as collocations
- Preposition Rules — The particles in phrasal verbs come from prepositions
- Academic Writing Words — Formal one-word alternatives to phrasal verbs
- ← View All Grammar Guides
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