Alignment and Closed Slurs (using fixed fingers) – This is from page 84 in my technique book (link below). Place the indicated fixed fingers on the third string and hold down for the entire line. Do not play the fixed fingers, only hold your fingers on the string. Play the indicated slurred notes. Make sure you have covered some other basic slur exercises first as this is more at the intermediate level.
For those using the book: Place the indicated fingers on the notes marked with an X and hold down for the entire line. Do not play the notes with an X, only hold your fingers on the string. Play the slurred notes of the following bar.
This exercise is from page 84 in my book Classical Guitar Technique: Essential Exercises, Scales, and Arpeggios. The 122 page book includes: Practice Routines, Tips, 100 Open String Exercises, 120 Giuliani Arpeggios, Scales, Slur Exercises, Shifts, Finger Independence, Barre, Tremolo, Common Harmonics, and much more. YouTube Video Link.