1. I can't feel the time how fast it is. I feel like yesterday was on Monday but I already get faced another Monday.

2. Time goes by me so fast, because i feel like yesterday was Monday but the other Monday is coming.

3. Time goes very fast. I feel like yesterday was Monday, but it's already another Monday again.

안녕하세요 JC님, ^^ 열심히 공부하시는군요,
3가지 표현 적어보았구요, 유용하게 쓰세요. 감사합니다 ^^*