What is "Last (month)" in Japanese?

Question

I know that "せんげつ" is last month, and "せんしゅう" is last week.

But how does one say

- Last January/February/March, ...

or

- Last Monday/Tuesday/Wednesday...

Or can you translate this?

"Last Monday, I went to school."

xD

Please help me! m(_ _)m

Thank you!

Answer 1

Last January

If you are referring to January of the current year, it would be kotoshi no ichigatsu.

If you are referring to January of the previous year, it would be kyonen no ichigatsu.

Last Monday

If you are referring to Monday of the current week, it would be konshuu no getsuyoubi.

If you are referring to Monday of the previous week, it would be senshuu no getsuyoubi.

Answer 2

Last January ことしの１月

Last Monday せんしゅうのげつようび

Last Monday, I went to school.

せんしゅうのげつようび、がっこうへ行きました

I hope this helps.

Answer 3

先月曜日、 学校へ行きましたです。

sengetuyoubi, gakkou e ikimashita desu

last Monday, school (e) went (polite "desu")

Educated guesses - you might want to wait for a native speaker.