And chapter 35 of the acoustic course to the first-order relational tone. homework

Question 3: The main key is D major, and the #F key in the third paragraph is transferred to #f minor (the parallel minor of the main key), so the first key #F in the third paragraph is matched with an intermediate chord, and the first level of the front key is equal to the sixth level of the back key, or the sixth level of the front key is equal to the fourth level of the back key, and the second key #E is matched with a transposed chord, which is the main chord of #f minor. You know, we'll work it out later. The fifth paragraph switches back to D major, and the last note #D in this paragraph is out of tune in the second level of D major, and the second level is subordinate, so don't say anything else.

Question 8: The tonic is G minor, and the seventh bar is going to turn to D minor, so the restored G key here starts with an intermediate chord, which can be that the sixth chord (the first inversion) of the previous tone is equal to the second chord of the latter tone (it is best to restore one of the first three voices to E here), and then the D minor belongs to the tonic. The eleventh bar goes to B flat major, over.