Adjective or Verb with -ed in present tense

FIrst of all, I am still learning this language.
I keep run into problems. I knew that Adjective with -ed ending expressed emotion, and -ing ending express fact or based on somehting.

I see sentence like

"the verb.... is used to" ....

Why is "used" ending with -ed ..

Sometime even though I write a paper in present tense, there are some verb that ending in -ed. I dont' get it! Can anyone give me a clue? .. I know I am not much specific. I will run a few more examples when I see in my readings. thank you.

[Casiopea]

Originally Posted by Still a learner

FIrst of all, I am still learning this language.
I keep running into problems. I know that Adjectives with -ed express emotion, and -ing express fact or based on somehting.

I see sentences like, "the verb.... is used to." Why does "used" end with -ed?

Welcome.

used to refers to the past. It means, something you did before, but no longer do now. :D

Originally Posted by Still a learner

Sometime even though I write a paper in present tense, there are some verbs that end in -ed. I dont' get it! Can anyone give me a clue? I know my question is vague. I will run a few examples by you when I see them in my readings. thank you.

OK. :D When you find the examples, let us know. It's important to know what we are dealing with. :D

All the best, :D