〜を除いて

1. Origins, structure, and basic meaning

• Structure: を除いて follows a noun and marks an item excluded as an exception from a larger group or range.
• Basic usage: 日曜日を除いて、図書館は毎日開いている。 says that the library opens on the remaining days, with Sunday excluded.

2. Common pitfalls and similar expressions

• Excluding versus limiting
  • 日曜日を除いて開く excludes Sunday, whereas 日曜日だけ開く includes Sunday alone. The two statements point in opposite directions about what remains in the range.
• Before a noun
  • Use を除く when modifying a following noun, as in 日曜日を除く毎日. を除いて、毎日開く instead presents the exception separately before continuing the sentence.