日

1. Origins, structure, and basic meaning

• Structure: When read ひ, 日 is a noun that can mean a day or sunlight.
• Basic usage: It identifies a day characterized by weather or sunlight shining through clouds.
  • 雨の日は家で本を読むことが多いです。 concerns rainy days; 雲の間から日が差して、庭が明るくなりました。 describes sunlight emerging between the clouds and brightening the garden.

2. Common pitfalls and similar expressions

• 雨の日
  • の links the weather to the day, and 日 here means a day or occasion.
• 日が差す
  • が marks the sunlight that shines, while 雲の間から identifies where the light emerges from.
• 日 and 太陽
  • 太陽(たいよう) directly denotes the sun as a celestial body, while 日 can mean a day or sunlight in context. Check the phrase because the character also has other readings.