英语语法分析

The seventh so added will be a major seventh in the case of triads on the tonic and subdominant, and a minor seventh in the case of other degrees of the diatonic major scale.

所增加的七音在主音和下属音三和弦的情况下成为大七和弦，在自然大音阶的其他音的情况下成为小七和弦。