之所以...是因為... gives explicit explanation structure: the reason why X is because Y.
Reason articulation frame - foregrounds explanatory relation
Formal and analytic tone - common in writing, speeches, argumentation
Good for complex justification - organizes claim and cause clearly
See examples below for varied real-world usage.
Keep X and Y tightly linked
- Y must directly explain X.
Register is relatively formal
- In casual speech, simpler 因为...所以... may be preferred.
Avoid circular explanations
- Reason clause should add substantive information.
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