毎年

1. Origins, structure, and basic meaning

• Structure: 毎年 is read as まいとし and is a time expression meaning every year or annually.
• Basic usage: A repeated activity appears in 毎年山に登る, while a seasonal event appears in 毎年春に咲く.

2. Common pitfalls and similar expressions

• Repeated time
  • It presents the same kind of event as recurring from year to year rather than occurring in only one year.
• Difference from 年々
  • 毎年 states that something happens each year; 年々 emphasizes a change progressing as the years pass.