- 01Am, is, are, was, were“I'm a bit tired today, but I was fine yesterday.”
- 02Verbs that do something“I'm cooking dinner right now, but I know the recipe by heart.”
- 03Every day, yesterday, tomorrow“I usually walk to work, but yesterday I took the bus.”
- 04I'm doing it, I've done it“I'm working on it now, and I've already finished the first part.”
- 05I've been waiting“I've been learning English for a while, and I've been practicing every day.”
- 06Went, bought, taken“I forgot my charger, so I bought a new one at the airport.”
- 07Who did it: active and passive“My flight was canceled, so I'm leaving tomorrow instead.”
- 08Facts, requests and wishes“If I were you, I'd ask for a window seat.”