duolingo said that now i can understand 43% of Spanish words =D i am extremely happy :) that makes want to learn moooooore =D
It is amazing! Most people would be surprised what they can figure out in a newspaper article if they know what half of the words mean. You are on your way to basic literacy in Spanish!
Congrats! When you know that much already, imagine how much you'll know by the time you finish your tree! :)
I've heard someone describe words like conjunctions and small helper verbs (as, is, in, for, etc) to be the "mortar" that holds language together. The big subject words are "bricks" (brick, computer, argument, etc).
Most of that 43% is probably "mortar" but it's very, very important to language! Keep learning!