past simple: subiect + verb + terminația ED/ forma a doua a verbului
-we know when the action takes place
exemplu: they worked hard yesterday
past continuous:
-something that was in progress
subiect+was/were+verb+ING
exemplu:Bob was driving a car when he saw the accident.
present perfect continuous:
-it emphasizes on the duration
subiect+have/has+been+verb+ING
exemplu: They have been working all morning.
Present perfect:
-we don't know when
subject +have/has+verb+ED/3rd form
ex: Piotr has won a scholarship.
Past perfect:
ex: I had done my homework ¹/ and then I went outside²/.
had done-earlier
went-later
you can use after, before and then