but does when

USAGE SUMMARY

The phrase "but does when" is not correct and usable in written English.
It appears to be an incomplete or improperly structured phrase that lacks clarity and context. Example: "I understand the concept, but does when it will be implemented matter?"

⚠ May contain grammatical issues

Science

News & Media

Human-verified examples from authoritative sources

Exact Expressions

1 human-written examples

M2e alone does not produce a significant immune response in humans, but does when presented as four tandem repeats genetically fused to flagellin, a TLR5 ligand [5].

Plosone

Human-verified similar examples from authoritative sources

Similar Expressions

57 human-written examples

These points for the lower limbs did not become problems when SWUMANOID performed the flutter kick for the crawl stroke, but did when it performed the breaststroke.

ROBOMECH Journal

Because inflorescences covered by paper bags did not set fruit, but did when hand-pollinated, the tree does not set fruits by apomixis.

Botanical Studies

Also, MT plants did not set seeds after self-crossing but did when cross-pollinated with the WT.

BMC Plant Biology

Quality of life subscale scores did not differentiate significantly between those with and without lymphedema when using objective classification but did when using either subjective tool.

BioMed Research International

CACO2 cells failed to demonstrate increased u-PA or u-PAR expression after stimulation with varying concentrations of LPS but did when stimulated with butyrate.

British Journal of Cancer

But he does when he is wedged in a crowded city bus.

The New York Times

But he did when it was most important.

The New York Times

You don't humanize things over there, but you do when you get back here.

The New Yorker

You don't cry when Gloucester's eyes are gouged out, but you do when he appears on Dover Beach".

Independent

Adams 6a and 6b did not show positive selection by themselves but they did when analyzed together (Table  1).

BMC Evolutionary Biology

Expert writing Tips

Best practice

Rephrase sentences using conditional clauses (e.g., "but it matters only when...") or temporal adverbs (e.g., "but it happens specifically when...") to ensure clarity.

Common error

Avoid using "but does when" as a standalone phrase. Always ensure that the sentence provides a clear conditional relationship, specifying both the action and the circumstances under which it occurs.

Linguistic Context

The phrase "but does when" typically serves as an incomplete conditional conjunction, attempting to connect two contrasting ideas where the second action is dependent on a specific condition or time. However, as Ludwig AI indicates, the phrase is not correct in written English and requires restructuring for clarity.

Expression frequency: Rare

Frequent in

Science

50%

News & Media

50%

Formal & Business

0%

Less common in

Academia

0%

Encyclopedias

0%

Wiki

0%

Ludwig's WRAP-UP

In summary, while the phrase "but does when" attempts to express a conditional contrast, it is generally considered grammatically incorrect and rarely used effectively in written English. Ludwig AI confirms this assessment, noting its incomplete or improperly structured nature. It appears sporadically across various sources, including news and scientific articles, however, correct alternatives such as "but only when" or more explicit conditional clauses provide greater clarity and grammatical accuracy. When constructing sentences with contrasting conditions, ensure the conditional relationship is fully expressed to avoid ambiguity.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

but only when

Focuses on limiting an action to a particular circumstance.

but it happens when

Emphasizes the timing of an event within a contrasting statement.

but that's when it does

Highlights a specific time at which something occurs, contrasting it with other times.

but it is effective when

Specifies the conditions under which something becomes effective, providing a conditional contrast.

but it works when

Highlights the operational context where something is functional, contrasting it with situations where it is not.

but specifically when

Narrows down the circumstances to very particular instances.

however, only when

Uses 'however' to introduce a contrasting situation that occurs under specific conditions.

but this happens when

Indicates a situation where an event occurs at a particular time, contrasting with other times.

yet it matters when

Indicates the importance of something in some specific circumstances.

but the impact is when

Highlights the relevance of a fact in specific moments.

FAQs

How can I correctly use a conditional phrase with "but"?

Ensure your sentence clearly states the condition. For example, instead of "but does when", use "but it only works "when properly configured"".

What's a more grammatical way to express a contrast involving timing?

Use phrases like "but it is effective "only when"" or "but that changes "when certain conditions are met"" to improve clarity.

Is "but does when" considered grammatically correct in formal writing?

No, it is generally considered grammatically incorrect. It is better to use a full conditional clause like "but it applies "when X occurs"".

What are some alternatives to using "but does when"?

Consider using phrases that explicitly state the condition, such as "but it matters "when context is considered"" or "but that's relevant "when assumptions are true"".