Ensure is usually followed by a direct object or by + method. Ensure in is not a standard verb-preposition pattern.
Use ensure with a direct object: ensure safety. Use ensure by when by introduces the method used to achieve something: ensure accuracy by checking the data twice. Ensure in is generally not idiomatic as a fixed pattern, although in may appear separately as a place or context adjunct.
These forms are not interchangeable. Choose the construction by meaning, not by which preposition appears most often.
Ensure commonly takes a direct object without a preposition.
By introduces the action or method used to guarantee a result.
Use that followed by a clause to state what must happen.
The same subject can take different constructions because each sentence answers a different question.
Some combinations appear in real text but do not mean what learners often assume.
In usually belongs to a following noun phrase, not to ensure itself.
✕ The company ensured in compliance. ✓ The company ensured compliance.By should introduce an action or means.
✕ They ensured success by the project. ✓ They ensured success by careful planning.Ensure normally takes a direct object directly.
✕ We ensured for safety. ✓ We ensured safety.Choose the expression that matches the intended meaning.
Paste the complete sentence below. Linguix checks the preposition together with grammar, spelling, punctuation, and style.
Yes. This is the most common structure, as in ensure safety or ensure quality.
Use it when by introduces the method used to guarantee a result.
Not as a standard fixed pattern. In may still appear separately in phrases such as ensure safety in schools.
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