Urgent Verbal Tenses Question regarding Before, Untill, After, Once

Test Preparation SAT Preparation
1

Need help urgently guys!

What tenses should we use when we see the words:

  1. Until
  2. Before
  3. After
  4. Once?

For example, if we see the word ‘Since’, usually we use the Past Perfect tense; if we see the words ‘in 1893’, we use the Simple Past tense.

2

Sorry I meant Present Perfect

3

Bump! My test is just tomorrow! Please help!