trzeba

1. expresses the goodness of the following verb; it is needed, one ought to [+infinitive]
2. expresses the naturalness or obviousness of the following verb; ought to, must [+infinitive]
3. expresses the necessity or obligation of the following verb; it is needed, one ought to [+infinitive], [+dative = for whom], [+genitive = what is needed]

coś

• Pron

  1. something
  2. something
  3. something

• Noun
• Particle

zrobić

1. to make (to cause the existence of)
2. to do (to perform; to execute)
3. to make; to cause (to effect or produce by means of some action)
4. to throw (to organize; to cause something to happen)
5. to make (to cause someone to take on traits of something, to become something) [+ z (genitive) = out of what]
6. to make (to unfairly assign traits of something to someone or something) [+ z (genitive) = out of what]
7. used as a generic verb, sometimes to replace another; to do
8. used anaphorically instead of repeating a previous verb; to do
9. to act, to behave
10. to come about, to arise
11. to get, to become [+ z (genitive) = out of what]
12. to start to feel [+dative = who]
13. (colloquial) to dress to kill [+ na (accusative)]
14. to be done; to be made

z czasem

with time, in time (as time passes)

czasem

• Adv

  1. every now and then, from time to time, occasionally, sometimes
  2. sometimes (in one or another case against the background of many others)

• Particle
• Noun

z

• Character

  The thirtieth letter of the Polish alphabet, called zet and written in the Latin script.

• Prep
• Particle
• Prep