Hiện tại đơn : S + am/ is/ are+ N/ Adj
- My father walks the dog every morning like clockwork.
- I am not usually lazy, but I have my moments.
Qúa khứ đơn : S + was/ were +…
- We studied English last night.
- He met his old friend near his house yesterday.
Hiện tại hoàn thành : S + have/ has + V3
- The thief has been found by the police
- These pencil cases have been bought by Nina.