Back to: Interactive Grammar Refresher
Review the ICAO DOC 9835 Basic vs. Complex Tenses Classification:
BASIC STRUCTURES | COMPLEX STRUCTURES |
Present Simple I do |
Past Perfect I had done |
Present Continuous I am doing |
Past Perfect Continuous I had been doing |
Past Simple I did |
Present Continuous for Future I am doing |
Past Continuous I was doing |
Future Continuous I will be doing |
Present Perfect I have done |
Future Perfect (Continuous) I will have been (doing) |
Present Perfect Continuous I have been doing |
Future in Past Tenses was going to, etc. |
Future Simple Will (+ Going to) |