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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
before leave
Grammar usage guide and real-world examplesUSAGE SUMMARY
No, the phrase "before leave" is not correct and cannot be used in written English.
It is missing a subject and verb, and it does not make grammatical sense as a standalone phrase. Instead, you could use the phrase "before leaving," which is a complete clause and can be used in written English. For example: "I need to finish my work before leaving the office." In this sentence, "before leaving" is used as a subordinate clause to show the timing of the action in the main clause, "I need to finish my work." Another example could be: "Please fill out this form before leaving the building." Here, "before leaving" is used as an adverbial phrase to indicate when the action in the main clause, "filling out the form," should be completed.
⚠ May contain grammatical issues
News & Media
Wiki
Academia
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
7 human-written examples
How long before Leave supporters start to complain they have been conned?
News & Media
Make this lovely scented fruit compote the night before, leave it to cool, and dish up with yoghurt or cereal.
News & Media
For as these either of ignorance know not, or of negligence regard not to set downe the efficient principall cause, whereby, and from which: so the other before, leave out the materiall causes, of which; and the instrumentall meanes, by which things are done.
Academia
You see, David did do what thousands have done before, leave home, in this case London, for Hollywood.
News & Media
You just throw in the ingredients at the beginning of the day (or maybe the night before), leave for work, and then ta-da!
News & Media
If you make the cake the day before, leave decorating it until the next day.
Wiki
Human-verified similar examples from authoritative sources
Similar Expressions
53 human-written examples
Before leaving, look down.
News & Media
Beltran and Castillo spoke before leaving.
News & Media
– before leaving the house".
News & Media
Before leaving Yemen, I traveled to Aden.
News & Media
WASHINGTON — Before leaving this afternoon [Aug.
News & Media
Expert writing Tips
Best practice
Always use a gerund form (e.g., "leaving") or a complete clause after "before" to ensure grammatical correctness. Instead of saying "before leave", say "before leaving" or "before you leave".
Common error
Avoid using "before" directly followed by a verb in its base form. This omits necessary grammatical elements like a subject or a gerund, leading to ungrammatical sentences.
Source & Trust
81%
Authority and reliability
2.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "before leave" functions incorrectly as a preposition followed by a verb in its base form. It requires either a gerund (leaving) or a full clause to be grammatically sound. As Ludwig AI points out, a subject is needed. Examples show correct usage with "before leaving" or "before [subject] leave".
Frequent in
News & Media
43%
Wiki
29%
Academia
28%
Less common in
Formal & Business
0%
Science
0%
Encyclopedias
0%
Ludwig's WRAP-UP
In summary, the phrase "before leave" is grammatically incorrect and should be avoided in formal writing. Ludwig AI suggests it is missing a subject and verb, and the provided examples demonstrate the correct usage of "before" with a gerund ("leaving") or a full clause (e.g., "before you leave"). While the phrase appears across various contexts, including news and media, its incorrectness undermines its appropriateness in professional or academic settings. To ensure clarity and grammatical accuracy, consider using alternatives such as "before leaving", "prior to departure", or "before you leave".
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
before departing
Replaces 'leave' with the present participle 'departing', creating a gerund phrase.
prior to leaving
Replaces "before" with "prior to" for a more formal tone while retaining the gerund.
before one leaves
Introduces a subject and verb, correcting the original phrase's grammatical issue.
before we leave
Specifies "we" as the subject, clarifying who is leaving.
before they leave
Specifies "they" as the subject to clarify the actors involved.
ahead of leaving
Uses "ahead of" instead of "before", emphasizing anticipation of the action.
prior to departure
Replaces 'leave' with a noun, using 'departure' for a more formal tone.
in anticipation of leaving
Adds a more formal and descriptive element, highlighting expectation.
in advance of departure
Emphasizes doing something well ahead of the departure time.
until leaving
Shifts the focus to the period leading up to departure.
FAQs
How to properly use "before" in relation to leaving?
Always follow "before" with either a gerund (the -ing form of a verb) like "before leaving" or a full clause (subject + verb) like "before we leave".
What are some alternatives to "before leave" that are grammatically correct?
Use phrases such as "prior to departure", "ahead of leaving", or "before departing" to convey the intended meaning accurately.
Is "before leave" ever correct in English?
No, "before leave" is not grammatically correct in standard English. It requires a subject and verb or a gerund to form a proper phrase. Consider "before you leave" or "prior to leaving" instead.
How can I rephrase "before leave" to sound more formal?
For a more formal tone, use phrases like "prior to departure" or "in anticipation of leaving" which add a descriptive and sophisticated element to your writing.
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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
81%
Authority and reliability
2.5/5
Expert rating
Real-world application tested