por que

1. (Brazil) why, what for, for what reason
2. by what, through what, via what

que isso

what's that? (often used in shock or dismay)

é

• Verb

  third-person singular present indicative of ser

• Noun
• Intj

importante

1. important (having relevant and crucial value)
2. influential

isso

• Pron

  1. that (the thing near you; the thing mentioned that concerns you)
  2. (Brazil,informal) this (the thing near me; the thing mentioned that concerns me)

• Intj

por

• Prep

  1. for (on behalf of)
  2. for (in order to obtain)
  3. for (over a period of time)
  4. for (indicates something given in an exchange)
  5. by (through the action or presence of)
  6. by (indicates the creator of a work)
  7. by (using the rules or logic of)
  8. times, by, multiplied by
  9. by; in the name of (indicates an oath)
  10. per; a; each (expresses the ratio of units)
  11. by (indicates a mathematical division)
  12. through (entering and then leaving; being the medium of)
  13. around; about; near (in the vicinity of)
  14. around; about; approximately (close in quantity, amount or value to)
  15. throughout (in various parts of)
  16. for; in favour of (supporting)
  17. for its own sake; without a motive
  18. about to

• Verb

que

• Conj

  1. that (connecting noun clause)
  2. that (introducing the result of the main clause)
  3. than (used in comparisons, to introduce the basis of comparison)
  4. seeing as; since; for; because (introduces explanatory clause)
  5. and (indicating the consequences of an action, often threateningly)
  6. short for porque ("because")

• Det
• Adv
• Pron