とおり・
とおり・どおり says that an action or result matches a particular model, instruction, plan, prediction, or previously stated content.
Matching a specific model
The key idea is close correspondence, not just general similarity. The later action or result follows what was said, shown, planned, predicted, or written.
With verbs
Choose the verb form according to when the model itself occurs. A dictionary form can describe something being shown now or still to come; a past form points back to an already completed statement or action.
With nouns and different endings
Add に when the expression describes how an action is done, の when it modifies a noun, and だ or です when directly stating that something matches.
Exact model or broader guideline?
とおり stresses matching particular content or a model. に沿って is better for acting in line with a broader policy, guideline, route, or general course.
External model or personal inclination?
とおり points to a model that the action reproduces. The pattern with まま can instead mean acting as one wishes or letting events follow their course.
More examples
料理人が教えるとおりに、ソースを混ぜた。
I mixed the sauce exactly as the chef instructed.
Analyze医者に言われたとおりに、毎朝薬を飲んでいる。
I take the medicine every morning, just as the doctor told me.
Analyze地図のとおりに歩いたら、駅に着いた。
When I followed the map exactly, I reached the station.
Analyze計画どおりに作業が進んでいる。
The work is proceeding according to plan.
Analyzeあなたの予想のとおりです。
It is just as you predicted.
Analyze彼女が描いたとおりの衣装を作った。
I made the costume exactly as she had drawn it.
Analyze