Al.
"Al" signifies "to" or "towards" a person or place. It is also used
before the noun or pronoun which signifies "person" after such verbs as
"give, tell", etc., which take two objects in different relations to the
verb, as-- Give (to) him the book, "Donu al li la libron." Tell (to)
him the truth, "Diru al li la veron." Write (to) him a letter, "Skribu
al li leteron." In such cases we can say "Pardonu lin", Pardon him, if
the "thing" object is not mentioned, but we cannot say "Pardonu lin la
kulpon", Forgive him his fault; it must be "Pardonu al li la kulpon."
The pronoun with "al" is sometimes used instead of the possessive
(pronoun) adjective "mia", etc., as "Mi trancxis al mi la fingron",
for "Mi trancxis mian fingron", I cut my finger. "Sxi kombis al si la
harojn," instead of "Sxi kombis siajn harojn," She combed her hair.
"Al" is frequently used as a prefix as well as after the verb, as
"aldoni", to add; "alpreni", to adopt; "aligxi", to adhere; "aljugxi",
to award.