That hippy hasn't worn SHOES all week!!!
Each week the Earth moves around the circumference of the sun!!
先 (earlier/ the tip) + 週 (week)
= 先週 (last week)
今 (now) + 週 (week)
= 今週 (this week)
週 (week) + 末 (the tip)
= 週末 (the weekend)
one week's time.
一 (one) + 週 (week) + 間 (a period of time)
= 一週間 (one week's time. )