What Does โCome on sthโ Mean?
โCome on sthโ means to happen or begin suddenly or unexpectedly on something, often related to a physical or emotional effect. It can also mean to start working or to have an effect on a particular thing.
Introduction
The phrase โcome on sthโ is a common phrasal verb in English that can be a bit confusing for learners. It usually describes when something begins or takes effect, especially suddenly or strongly. For example, a headache might โcome onโ during the day, or a machine might โcome onโ when you press a button. The phrase โcome on sthโ often implies the action is related to a specific object or condition. Understanding the โcome on sthโ meaning helps learners recognize when and how to use this expression naturally in everyday conversations.
Quick Info Box
- Phrasal verb: come on something
- Type: Intransitive (usually), sometimes transitive depending on context
- Level: B1 (Intermediate)
- Short meaning: To begin or start affecting something suddenly
Structure (Grammar Rules)
โCome onโ is generally an inseparable phrasal verb, meaning the verb and particle stay together. However, when followed by a noun or pronoun (something), the object comes after the entire phrasal verb.
- Correct pattern: come on + something
- Example: The pain came on suddenly.
- Incorrect: The pain came it on.
Note: โCome onโ can be followed by nouns, pronouns, or no object at all.
How to Use โCome on sthโ?
Use โcome on sthโ when you want to describe something starting or beginning, especially effects or changes related to a particular thing. It often refers to physical sensations, machines, devices, or feelings.
- When a machine starts working: โThe lights come on at sunset.โ
- When symptoms start: โDizziness came on after I stood up.โ
- When feelings or emotions begin: โConfidence came on during the presentation.โ
Examples
- The headache came on suddenly after lunch.
- When the heater comes on, the room warms up quickly.
- After a few minutes, the fog came on, making it hard to see.
- Confidence really came on when she practiced more.
- Electricity comes on automatically after a power outage.
Common Mistakes
- Incorrect: The pain came it on quickly.
- Correct: The pain came on quickly.
- Incorrect: The heater comes on it at night.
- Correct: The heater comes on at night.
Differences / Synonyms
โCome on sthโ vs. โTurn on sthโ: โCome onโ means to start by itself or suddenly, often automatically. โTurn onโ means to activate something intentionally.
โCome on sthโ vs. โSet inโ: โSet inโ usually describes something (like bad weather or illness) starting to last for a long time, while โcome onโ can be sudden and temporary.
Common Collocations
- Come on the lights
- Come on the heater
- Come on a headache
- Come on a feeling
- Come on the TV
Related Phrasal Verbs
Here are related phrasal verbs of come on sth:
Real-life Dialogue
Anna: Did the air conditioner come on yet? Itโs getting hot in here.
Ben: Yes, it just came on a few minutes ago.
Anna: Good! I was worried it wouldnโt start.
Ben: Sometimes it takes a little time to come on after you press the button.
Practice
Fill in the blank with the correct form of โcome onโ:
- The lights _______ automatically when it gets dark.
- A headache _______ after I skipped lunch.
- The heater didnโt _______ until I fixed the switch.
FAQs
- Q: Is โcome on sthโ separable?
A: No, it is usually inseparable; the object comes after the entire phrase. - Q: Can โcome onโ be used without an object?
A: Yes, it can be used without an object, e.g., โThe pain came on.โ - Q: What is the difference between โcome onโ and โturn onโ?
A: โCome onโ is often automatic or sudden; โturn onโ is intentional activation. - Q: Is โcome on sthโ formal or informal?
A: It is neutral and used in both formal and informal contexts. - Q: Can feelings โcome onโ?
A: Yes, feelings like confidence or fear can come on suddenly.
