Usage of 应当
应当 is a formal modal verb meaning 'should' or 'ought to.' It expresses a strong sense of obligation or correctness, often used in written or formal spoken Chinese. It is more formal than 应该 and often appears in official documents, advice, or moral statements.
Common Collocations
- 应当尊重 (should respect): used when emphasizing respect or consideration.
- 应当完成 (ought to complete): often used in academic or work contexts.
- 应当保护 (should protect): common in environmental or social responsibility contexts.
Nuances
Using 应当 implies a moral or social duty rather than a mere suggestion. It is less casual than 应该 and is rarely used in everyday informal conversations. When you want to express a polite recommendation or a rule, 应当 is appropriate.
Avoid Confusion
Do not confuse 应当 with 应该; 应当 is more formal and stronger in tone. For casual speech, 应该 is preferred.