I mostly understood the particles in Japanese, but there is still one thing I
couldn't get over with. And that is the following problem: I do not exactly
know, when to use は、に or no particle. It's about the following three
sentences:

  * いつ勉強しますか

  * 六時 **に** 起きます

  * 今日 **は** 忙しいです

Why does the first sentence have no particle, the second one a に-particle and
the last one a は-particle? I can see a pattern in some way, but I can't figure
out, why days use は, why times use に and why does not use any particle
CC BY-SA 4.0
2022-02-28T16:47:08.197
93562
2022-03-01T11:35:34.747
2022-03-01T11:35:34.747
50710
50710
question
particles particle-に particle-は
When to use は、に or no particle?