1. The firemen didn't arrive until the building was almost burned down

2. We didn't leave the party until it had stopped raining

3. Isabel didn't decide to go shopping until all the shops had closed 

4. The police didn't come to the scene until the robbers had gone

Công thức: It is/was not until + S + ( present/past) V that S1 + ( present/past) V

--> S1 + ( present/past) V + until S + ( present/past) V

Lưu ý là trong câu thì đều phải đồng bộ( It is thì ở sau verb chia hiện tại, it was thì ở sau verb chia qk

1. It was not until the building was almost burned down that the firemen arrived.

=> The firemen didn't arrive until the building was almost burned down 

2. It was not until it had stopped raining that we left the party

=> We didn't leave the party until it had stopped raining

3. It was not until all the shops had closed that Isabel decided to go shopping -

=> Isabel didn't decide to go shopping until all the shops had closed

4. It was not until the robbers had gone that the police came to the scene

=> The police didn't come to  the scene until the robbers had gone

Cách dùng chung của 4 câu: 

-Simple past + until + simple past

-Simple past + until + simple past

- Simple future + Until + Present simple/Present perfect