The 2/4 beat is based on 1/4 notes as one beat, two beats in one measure, and the strength pattern is (strong, weak)

The 6/8 beat is based on An eighth note is one beat, and each measure has six beats. The law of strength and weakness is (strong, weak, weak, second strong, weak, weak)

Take 3 as an example, do you mean 3/4? Each measure has 3 beats with a quarter note,

f is strong, p is weak, mp is weaker, mf is stronger

Roll call: do re mi fa sol la si

Whether the sound name is required, the corresponding is C D E F G A C D E F G A B

The first type:

A colon before the termination line. It is played in two situations: if there is a stop line before and a colon after the stop line, the section between the two repeat marks will be repeated; if there is no repeat mark before, it will be repeated from the beginning.

Second type:

D.C. mark. Italian: da capo, repeat from the beginning. When the Fine mark appears, it repeats until the Fine mark ends.

Third type:

D.S. mark. Italian: dal segno, repeat from the mark. The mark is "※", and it is repeated from this mark.