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 the Phrasal Verb 'Die Off'

"As species come and go, only those who adapt survive, while the rest inevitably die off like autumn leaves."

📖 Definition

To die off refers to the gradual extinction or disappearance of a species, group, or population, usually due to external factors such as disease or environmental changes.

Examples in context

Due to pollution, many fish in the lake have died off, disrupting the ecosystem.
Historians have documented how certain language dialects slowly die off over time.
As summer progresses, many of the weaker plants in the garden die off.

📖 Definition

To die off refers to the gradual extinction or disappearance of a species, group, or population, usually due to external factors such as disease or environmental changes.

📝 Grammar Info

Separable

Die off is inseparable and cannot have a word between it.

Neutral

This phrasal verb can be used in both formal and informal contexts.

Transitive

Die off is intransitive; it does not take a direct object.

📊 Conjugation Table

Tense	Form	Example
Present Simple	die off	Many ancient species die off due to climate changes.
Past Simple	died off	The population of dodos died off in the 17th century.
Present Continuous	dying off	Coral reefs are dying off due to rising ocean temperatures.
Present Perfect	have died off	Several species have died off in the past decade alone.

💡 When to Use

Discussing extinct species

Use die off when talking about species that have become extinct or populations that have disappeared.

Example: "Dinosaurs died off millions of years ago."

Environmental issues

Use this phrase when addressing the issue of organisms disappearing due to ecological changes.

Example: "Trees are dying off at an alarming rate due to deforestation."

Historical population decline

Use die off when describing significant population declines in history due to disease or other factors.

Example: "Native American tribes died off after European contact."

⚠️ Common Mistakes

Misuse in meaning

❌ Wrong: The battery in my phone died off.

✅ Correct: The battery in my phone died.

💡 Tip: Use 'die' for objects, 'die off' for living things.

Incorrect separability

❌ Wrong: Many species die quickly off.

✅ Correct: Many species die off quickly.

💡 Tip: Remember, ‘die off’ is inseparable, keep the words together.

Transitive misuse

❌ Wrong: They died off the trees.

✅ Correct: The trees died off.

💡 Tip: ‘Die off’ has no direct object; it describes the process.

Practice

DIE OFF - 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

Due to pollution, many fish in the lake have died off, disrupting the ecosystem.
The World Becomes A Web
2
Listen to example

Historians have documented how certain language dialects slowly die off over time.
The World Becomes A Web
3
Listen to example

As summer progresses, many of the weaker plants in the garden die off.
The World Becomes A Web

Synonyms & Antonyms

Synonyms

extinct vanish

Antonyms

thrive

Quick Check

Complete the sentence with the correct phrasal verb:

"The old trees in the park began to ___ off due to disease."

run

die off

drop

rise

❓ Frequently Asked Questions about Die Off

What is the origin of die off?

The phrase 'die off' emerged in the mid-20th century, primarily in biological contexts, to describe a natural decline in population or extinction. Its usage has expanded to cover widespread decline in various species or groups affected by external factors such as disease or climate change.

Can die off be used in formal and informal contexts?

'Die off' is neutral, suitable for both formal and informal settings. It's frequently employed in environmental science, history, and everyday conversation about population decline, conveying a natural process typically involving living organisms.

What is the difference between die off and vanish?

‘Die off’ specifically refers to the natural decline or extinction of populations, especially in biological contexts. ‘Vanish,’ however, is more general, implying sudden disappearance without the nuance of gradual biological decline.

Browse All The World Becomes A Web 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

📖 Definition

📖 Definition

📝 Grammar Info

📊 Conjugation Table

💡 When to Use

⚠️ Common Mistakes

DIE OFF - IN PRACTICE

Study Method Proposal

Examples in Context

Synonyms & Antonyms

Quick Check

❓ Frequently Asked Questions about Die Off

Related Phrasal Verbs

Alessandra Nóbrega