ensure
Definitions
To make certain that something happens or is the case.
确保；保证（某事发生）
Root Breakdown
Root-deriveden- ('make, cause') + sure ('certain') = 'make certain.' ensure takes an event or outcome as its object — you ensure that something happens or that a condition holds: ensure success, ensure the door is locked. It does not take a person as its direct object (that's assure).
Root sur still carries 9 more wordsUsage Guide
The ensure / assure / insure trap — the classic confusion for learners:
- ensure = make an event certain. Object is a thing/outcome: 'ensure success,' 'ensure that it works.' (Hook: Ensure an Event.)
- assure = make a person feel certain, remove their worry: 'I assure you it's fine,' 'assure the customers.' (Hook: Assure Anxiety.)
- insure = protect against financial loss by buying insurance: 'insure your car against theft.' (Hook: Insure with Insurance.)
In American English 'insure' is sometimes used where British English uses 'ensure,' but keeping them separate is safest.
Example Sentences
- 1.
These measures ensure the safety of all passengers.
- 2.
Please ensure that all the lights are switched off.
- 3.
Careful planning helped ensure the project's success.