GUIDED PATH · PHASE 5
Guided Japanese Course
A mastery path for complete beginners and technology professionals.
HOW THIS COURSE WORKS
Follow the path. Advance by mastery.
The primary path tells you what to do next. You can still open any available lesson, but completion is based on checkpoints rather than calendar days.
FULL TARGET CURRICULUM
Tracks 0–10
TRACK 2 · 2-5
で: Where / How an Action Happens
Use で for the place where an action occurs and for the means/tool used to perform it.
- Basic action sentences and を.
Technical Japanese uses で constantly: at the office, in the test environment, with Python, by train.
1. で marks the arena of an action
If an action occurs somewhere, that location can take で.
Natural: I work at the office.
Structure: office — at arena — work.
Action location.
Natural: I speak in the meeting room.
Structure: meeting room — at — speak.
Action location.
Natural: I check it in the test environment.
Structure: test environment — in — check.
Technical execution location.
2. で can also mark means or tool
When the noun is an instrument, language, transport method, or technology, で can mean using/by means of.
Natural: I make a tool using Python.
Structure: Python — by means of — tool — object — make.
Technology as means.
Natural: I write in Japanese.
Structure: Japanese — using — write.
Language as medium.
Natural: I go by train.
Structure: train — by means of — go.
Transportation means.
3. Do not confuse で with existence/location に
Ask: where does the action happen? Later に marks destinations, specific times, and where something exists.
4. で decision worksheet
Create two columns: ACTION PLACE and MEANS/TOOL. Write five examples in each and explain why で fits.
INTERACTIVE WORKSHEET
4. で decision worksheet
Write 10 sentences with で: 5 action-location, 5 means/tool. Include Python, Japanese, office, meeting room, and test environment.
Tip: on a foldable or tablet, use your pen directly on the page. Your strokes are saved in this browser as you work.
4. で decision worksheet
Write 10 sentences with で: 5 action-location, 5 means/tool. Include Python, Japanese, office, meeting room, and test environment.
5. IDE + Tsundoku reinforcement
Construct controlled examples, then find natural ones in reading.
Language IDE
Why here: It lets you tag で by semantic role rather than one English preposition.
How to use it for this lesson: Build オフィスで働きます and Pythonでツールを作ります. Label the first action-place, the second means.
Debug で →Tsundoku Reading Nook
Why here: Natural English may render で as at, in, by, with, or using.
How to use it for this lesson: Find three で phrases and classify them before opening literal translation.
Inspect で in context →Mastery checkpoint
Answer from memory. Treat every miss as a debugging signal: inspect the explanation, repair the rule, and retry.
