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when it's dark
Grammar usage guide and real-world examples

Alternative expressions(12)

at night

after dark

after sunset

under cover of darkness

during the night

in the nighttime

at nighttime

in the evening

in darkness

nightly

late in the day

towards the end of the evening

Table of contents

Usage summary

Human-verified examples

Expert writing tips

Linguistic context

Ludwig's wrap-up

Alternative expressions

FAQs

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

When it's dark, a child's eyes can play tricks on him.

Wiki

WikiHow

"Well, it's even worse when it's dark.

News & Media

The Guardian

People still smashing windows when it's dark.

News & Media

The Guardian

"When it's dark and gray and rainy you think, 'Yuck!

News & Media

The New York Times

"I'll be in when it's dark or I'm wet".

News & Media

The New York Times

CANDLES shine most brightly when it's dark outside.

News & Media

The New York Times

It begins around sunset and finishes when it's dark.

News & Media

The Guardian

And, he added, "Bad things happen when it's dark".

News & Media

The New York Times

"When it's dark at night, you'll hear them in our parks.

News & Media

The New Yorker

"It's real easy to hide when it's dark everywhere," Mr. Carey said.

News & Media

The New York Times

Where I grew up, you open the back door and say, "Come back when it's dark".

News & Media

The New York Times

Expert writing Tips

Best practice

In formal academic or legal writing, favor the uncontracted version "when it is dark" to maintain a professional tone.

Common error

Ensure you do not write "when its dark". The word "it's" is a contraction of "it is", which is required here to serve as the subject and verb of the clause. The word "its" is a possessive pronoun and is grammatically incorrect in this context.

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

91%

Authority and reliability

4.9/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "when it's dark" functions as a temporal subordinate clause. It consists of the relative adverb "when", the dummy subject "it", the contracted verb "is" and the adjective "dark". According to Ludwig's data, it typically modifies a main clause by providing the environmental condition necessary for the action to occur.

Expression frequency: Very common

Frequent in

News & Media

55%

Wiki

25%

Science

10%

Less common in

Formal & Business

Social Media

Encyclopedias

Ludwig's WRAP-UP

In summary, "when it's dark" is a highly versatile and grammatically standard phrase used to establish temporal and environmental conditions. Ludwig AI analysis shows a heavy concentration in News & Media and Wiki contexts, where it serves to clarify timing for both safety and narrative effect. It is widely recognized by authoritative sources like The New York Times and The Guardian. Writers should be careful not to confuse the contraction "it's" with the possessive "its" and may consider uncontracted alternatives for strictly formal documents.

More alternative expressions(10)

Phrases that express similar concepts, ordered by semantic similarity:

when it is dark

removes the contraction for a more formal tone

when it gets dark

focuses on the transition to darkness

after sunset

specifies the astronomical time trigger

at night

a broader temporal noun phrase

once night falls

uses more poetic or literary imagery

after dusk

specifically refers to the period immediately following twilight

under cover of darkness

adds a layer of secrecy or concealment

in the absence of light

provides a more scientific or clinical description

when the lights go out

suggests artificial light being extinguished rather than natural darkness

when visibility is low

replaces visual state with a technical or functional description

FAQs

What can I say instead of "when it's dark"?

You can use alternatives like "at night", "after dark" or "once it gets dark" depending on whether you want to describe a state or a transition.

Is "when it's dark" formal enough for business writing?

While correct, it is often better to use ""when it is dark"" or "during the hours of darkness" for a more professional or technical register.

What is the difference between "when it's dark" and "at night"?

The phrase "when it's dark" refers specifically to the light level, whereas "at night" refers to the specific time period between sunset and sunrise, regardless of artificial lighting.

How do I use "when it's dark" in a sentence?

It usually functions as a temporal adverbial clause, for example: "The stars are only visible "when it's dark"."

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Table of contents

Usage summary

Human-verified examples

Expert writing tips

Linguistic context

Ludwig's wrap-up

Alternative expressions

FAQs

Source & Trust

91%

Authority and reliability

4.9/5

Expert rating

Real-world application tested

Most frequent sentences:

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when it's darkGrammar usage guide and real-world examples

when it's dark
Grammar usage guide and real-world examples