渡り廊下

1. Origins, structure, and basic meaning

• Structure: 渡り廊下(わたりろうか) means a corridor connecting separate buildings or wings.
• Basic usage: It is used for a passage linking a school building and gym or for walking along that passage.

2. Common pitfalls and similar expressions

• で marks the means of connection
  • In 渡り廊下で結ばれている, で marks what connects the two buildings.
• を marks a space traversed
  • In 渡り廊下を歩いた, を marks the space someone walked through.
  • This differs from treating the corridor as the direct object acted upon.