Which sentence uses 'come across' correctly?

I came across an old photo while cleaning the attic

I came across the street to meet you

I came across an old photo while cleaning the attic

The bridge came across the river

Which sentence uses 'come across' correctly?

She comes across as very confident in interviews

He came across the finish line first

Which sentence uses 'come by' correctly?

Good jobs are hard to come by these days

The bus will come by this route

Good jobs are hard to come by these days

I come by the office every morning at 8

Which sentence uses 'come by' correctly?

Can you come by my house later for coffee?

The train came by the station too fast

She comes by the grocery store home

Which sentence uses 'come out' correctly?

The new iPhone will come out next month

I need to come out from the house now

The new iPhone will come out next month

Which sentence uses 'come out' correctly?

The truth finally came out after the investigation

The students came out to the classroom

Understanding 'Base On': Usage and Examples

“A wise decision should be based on thoughtful consideration, recognizing that foundations determine the strength of the entire structure.”

📖 Definition

The phrasal verb ‘base on’ generally refers to the use of specific information, standards, or ideas as the foundation or support for something.

📝 Grammar Info

Separable

The phrasal verb 'base on' cannot be separated.

Neutral

It can be used in both formal and informal contexts.

Transitive

Yes

'Base on' requires an object that follows it to complete the meaning.

📊 Conjugation Table

Tense	Form	Example
Present Simple	base on	The report is based on recent studies.
Past Simple	was based on	The decision was based on available resources.
Present Continuous	basing on	They are basing their arguments on facts.
Present Perfect	have based on	We have based our strategy on customer feedback.

💡 When to Use

Explaining foundations

Use when you need to express how something is supported or derived from specific information.

Example: “The project plan was based on thorough research.”

Citing sources

Helpful when attributing the origin of ideas or data used in forming conclusions or actions.

Example: “Her opinion was based on several interviews.”

Developing theories

Appropriate for illustrating how theories or beliefs stem from previous knowledge or evidence.

Example: “The hypothesis is based on established scientific principles.”

⚠️ Common Mistakes

Incorrect particle usage

❌ Wrong: The decision was based in facts.

✅ Correct: The decision was based on facts.

💡 Tip: Remember to use 'on' to indicate foundation.

Omission of object

❌ Wrong: Her actions were based.

✅ Correct: Her actions were based on principle.

💡 Tip: Always specify what the action is based on.

Pluralization error

❌ Wrong: The results are bases on tests.

✅ Correct: The results are based on tests.

💡 Tip: Use 'based on', not 'bases'.

Practice

BASE ON – IN PRACTICE

Study Method Proposal

Listen and repeat the audio as many times as needed to improve your pronunciation
Use the audio as a dictation exercise, trying to write what you hear and understand
Create a new sentence following the structure of the example sentences

Examples in Context

1
Listen to example

The book’s plot is based on true events from the author’s life.
How National Parks Came to Be
2
Listen to example

His career choices were largely based on family expectations.
How to Become a Hiker
3
Listen to example

The policy change is based on new research findings regarding health impacts.
Bringing Animals Back to Life

Synonyms & Antonyms

Synonyms

ground on derive from

Antonyms

diverge from

Quick Check

Complete the sentence with the correct phrasal verb:

“The success of the campaign was ___ on thorough market research.”

based in

base on

based by

based at

❓ Frequently Asked Questions about Base On

What is the origin of base on?

The phrase 'base on' originates from the Latin word 'basis', implying foundation. Used since the late 16th century, it denotes action relying on specific information or grounds.

Can base on be used in formal and informal contexts?

'Base on' is appropriate for both. In professional writing, it imparts clarity and precision, while in informal contexts, it simplifies communication regarding source or rationale.

What is the difference between base on and ground on?

Both imply reliance; however, 'base on' is more common and general, while 'ground on' suggests stronger support and justification, often for scientific or factual claims.

Browse All National Parks Phrasal Verbs

About the Author

Alessandra Nóbrega

History teacher who fell in love with English! This passion led me to specialize in languages and work on bilingual education projects. With 37 years in education, I believe learning should be meaningful – not just memorization.

Learn more about my journey