Lesson 22 · Language · Prefixes
Step 1 of 4
Find the wrong step
Your lessonPrefixesWarm-up
The Locked Word Workshop
A word machine adds the prefix un- to the word lock.
- Base word
- lock
- New word
- unlock
Your question
What does unlock mean?
Lumi’s answer: “It means to lock something again.”
1
Step 1 of 4
Find the wrong step
Find where the reasoning first breaks
Start with Step 1 and move downward. Choose the first line that stops making sense.
Later lines may be wrong too. Pick the first mistake.
Lumi’s work
These lines form one solution. Read them from top to bottom.
- 1
The base word lock means to fasten something closed.
- 2
The prefix un- always means do it again.
- 3
So unlock means lock again.
- 4
The door should become more firmly closed.