二人

1. Origins, structure, and basic meaning

• Structure: Spelling: 二人. Reading: ふたり. Core meaning: two people.
• Basic usage: Representative examples: 二人で大きな机を運びました / 窓辺に二人の学生が座っている.

2. Common pitfalls and similar expressions

• Counting and modifying
  • 二人で means two people acting together, while 二人の学生 gives the number of students. Distinguish the person count from 二つ, used for two general objects.