...，以免／免得... means so as to avoid..., introducing preventive purpose.
Prevention-oriented purpose - avoid undesired outcome
Risk-control logic - planning with downside awareness
Frequent practical instruction use - warnings, procedures, policy
See examples below for varied real-world usage.
Second clause should be undesirable consequence
- That is what is being prevented.
Action in first clause should plausibly prevent second
- Keep causal logic clear.
免得 often feels colloquial; 以免 relatively formal
- Choose by register.
Please back up first to avoid data loss.
We leave early to avoid traffic jam.
Confirm address first so as not to take the wrong route.
Write key points down to avoid forgetting.
Find real examples
Discover this pattern in manga, dramas & more
Save for spaced repetition
Add sentences to your study deck
Practice ...，以免／免得... and other grammar patterns with manga, dramas, and more.
Start learning free