47. We didn't study English until we began primary school.

\(\Rightarrow\) It was not until we began primary school that we studied English.

48. I didn't learn English until 2002.

\(\Rightarrow\) It wasn't until 2002 that I learned English.

49. He didn't know how to swim until he was 30.

\(\Rightarrow\) It It was not until he was 30 that he knew how to swim.

50. They didn't begin to learn English until 1980.

\(\Rightarrow\) It It was not until 1980 that they began to learn English.

1. It was not until I went to university that I liked chocolate

2. It was not until 2.30 that someone could leave the stadium

3. It was not until her birthday that she was allowed to open her presents

4. It was not until last summer that we had some holidays

5. It was not until the age of 24 that she stopped learning German

1. we moved to hanoi we met

2. are going to be built for dosabled children

3. leads to my villahe is lined with baboo trees

4

i stayed in to watch a film on tv

1.No one could leave the stadiumuntil 2.30.

=>It was not until......2.30 that someone could leave the stadium............

=>Not until......2.30 could someone leave the stadium ..........

2.She were not allowed to open her presents until her birthday.

=>It was not until.......her birthday that she was allowed to opne her presents .......

=>Not until............her birthday was she allowed to opne her presents ........................

3.We did not have any holiday until last summer.

=>It was not until.......last summer that we had some holiday .......

=>Not until........last summer did we have some holiday ........

4.She did not stop learning German until the age of 24.

=>It was not until ..........the age of 24 that she stopped learning German ........

=>Not until.......the age of 24 did she stop learning German ...........

5.I could not finsh my project until Mark helped me.

=>It was not until.............Mark helped me that I could finish my project .................

=>Not until..........Mark helped me could I finish my project .......

6.I did not sleep until midnight.

=>It was not until......midnight that I slept ............

=>Not until...............midnight did I sleep ....................

7.They did not pay the bill until the electricity was cut off.

=>It was not until.......the electricity was cut off that they paid the bill ...........

=>Not until.......the electricity was cut off did they pay the bill .......

8.I could comment further until I had all the information.

=>It was not until.............I had all the information that I could comment further .......................

=>Not until.....I had all the information could I comment further ..........

1.No one could leave the stadium until 2.30.

=>It was not until......2.30 that someone could leave the stadium............

=>Not until......2.30 could someone leave the stadium ..........

2.She were not allowed to open her presents until her birthday.

=>It was not until.......her birthday that she was allowed to open her presents .......

=>Not until............her birthday was she allowed to open her presents ........................

3.We did not have any holiday until last summer.

=>It was not until.......last summer that we had some holiday .......

=>Not until........last summer did we have some holiday ........

4.She did not stop learning German until the age of 24.

=>It was not until ..........the age of 24 that she stopped learning German ........

=>Not until.......the age of 24 did she stop learning German ...........

5.I could not finish my project until Mark helped me.

=>It was not until.............Mark helped me that I could finish my project .................

=>Not until..........Mark helped me could I finish my project .......

6.I did not sleep until midnight.

=>It was not until......midnight that I slept ............

=>Not until...............midnight did I sleep ....................

7.They did not pay the bill until the electricity was cut off.

=>It was not until.......the electricity was cut off that they paid the bill ...........

=>Not until.......the electricity was cut off did they pay the bill .......

8.I could comment further until I had all the information.

=>It was not until.............I had all the information that I could comment further .......................

=>Not until.....I had all the information could I comment further ..........

1) Mary did not stop working in the garden until her face was hot and red.

It was not until .mary's face was hot and red that she stopped working in the garden..

Not until .mary's face was hot and red did she stop working in the garden..

2) He did not reunite with his family until 1975.

It was not until .1975 that he reunited with his family..

Not until .1975 did he reunited with his family..

3) I did not know anything about that flower until I saw it in a fair.

It was not until .i saw it in a fair that i knew something about that flower..

Not until ..I saw it in a fair did i know something about that flower.

4) She did not start working until her child was five.

It was not until .her child was five that she started working..

Not until .her child was five did she start working..

5) I did not go to bed until I finished watching TV.

It was not until ..i finished watching tv that i went to bed.

Not until ..i finished watching tv did i go to bed.

6) The Titanic was not lifted to shore until 1998.

It was not until ..1998 that The Titanic was lifted to shore.

Not until ..1998 was The Titanic lifted to shore.

7) She did not publish her first novel until she was 54.

It was not until .she was 54 that she published her first novel..

Not until ..she was 54 did she publish her first novel.

8) He did not know how to use a computer until he started working for the company.

It was not until ..he started working for the company, he knew how to use a computer.

Not until ..he started working for the company did he know how to use a computer.

35. He didn’t realize it was a day off until he got to the office.
It was not until he got to the office that he realized it was a day off

36.I didn’t meet her so I didn’t know about her good news.
If I had  met her, I would have known about her good news
37.She didn’t know about that bad news until she came home from work.
It was not until she came home from work that she knew about that bad new
38.Jack lives far away from his parents, so he can’t visit them often.
If Jack didn’t live far away from his parents, he could visit them often

VIẾT LẠI CÂU SAO CHO NGHĨA KHÔNG ĐỔI
1.I didn’t meet  her until she called me     

=>It was not until....she called me that I met her ......

2. You’d better not be lazy now.                 

 => If I .......were you, i wouldn't be lazy now.........

4. “Would you like to go out with me tonight?” He said to me.

=> He invited..........  me to go out with him that night.......

5. People say that he will come here tonight

=> He........is said to come here tonight....
6. “Don’t put off your work until next week ” he said to her

=> He told......her not to put off her work until the next week.......
7. People think that you were a good pupil last year.

=> You.....is thought to have been a good pupil last year......

8. People say that the boy was saved.

=> The boy....is said to have been saved....

9. I had to spend two days traveling to that town.

=> It. took me two days to travel to that town........

bạn cứ theo cấu trúc sau:

it was not until + time phrase/time clause + that + S + Ved + O

1, it was not until 2.30 that no one left the stadium

2, it was not until her birthday that she allowed to open her presents

3, it was not until the end of 2004 that the work on the new bridge complete

completed nah bạn mình đánh thiếu chữ "d"