今週

1. Origins, structure, and basic meaning

• Structure: 今週 is read as こんしゅう and is a time noun for the week containing the current reference point.
• Basic usage: The whole week is topicalized in 今週は, while a day within it appears in 今週の金曜日.

2. Common pitfalls and similar expressions

• Particle use with time
  • When it directly states when an action occurs, 今週 commonly appears without に; は may be added to make it the topic.
• Difference from 今週中
  • 今週 names this week, while 今週中 emphasizes a deadline or occurrence before the week ends.