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

buttercream
Thu, 22 Jan 2015 02:40:20 +0000

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.