był

third-person singular masculine past of być

podobny

1. similar, alike (having similar qualities)
2. similar, alike (the same as one before)
3. similar (obtainable from one another through a series of transformations)
4. (obsolete) likely; probable, possible (able or likely to happen)
5. suitable (that which is apt for a situation)
6. workable (that from or with which something may be made or done)
7. correct, proper, right

do

1. denotes allative movement; to, toward
2. denotes illative movement; into, in
3. denotes purpose; for, to
4. denotes the subject of an address or action; to
5. until, till, to
6. up to, as many as
7. denotes a deadline; by (indicates an intended deadline)

nauczyciela

genitive/accusative singular of nauczyciel

chłopców

genitive/accusative plural of chłopiec