1. This is the first time they have heard such a thing

2. This is the first time one has challenged his authority.

3. It is 2 years since she left university 

They have never heard such a thing before. => This is the firt time they have heard such a thing 

Noone has challeged his authority before. => This is the first time one has challenged his authority

She left university 2 years ago =>It is  2 years since she left university

my mother  was the most warm-hearted person I've ever known.=>I have never known such my warm - heated mother 

I haven't been able to see them for over a years.=>It is 

It stared to rain ai o'clock.=>It has

 lm nốt 2 câu cuối nhé

Noone has challenged his authority before

=> This is the first time his authority has been challenged.

She left university 2 years ago

=> It is 2 years since she left university.

My mother was the most warm-hearted person I’ve ever known

=> I have never known a more warm-hearted person than my mother.

Chúc bạn học tốt!

1.She left university 2 years ago
⇨ It is 2 years since she left university
2. My mother was the most warm-hearted person I've ever known.
⇨ I have never known a more warm-hearted person than his mother
3. I haven't been able to see them for over a year.
⇨ It is over a year since I was last able to see them ( I last saw them )
4. It stared to rain at 2 o'clock.
⇨ It has been raining since 2 o'clock
5. I have never been to the ballet before.
⇨ It is the first time I have ever been to the ballet.
6. John and Mary moved to Edinburgh twenty years ago.
⇨ It is twenty years since John nd Mary moved to Ediburrgh
7. The police started looking for him two months ago.
⇨ For two months now the police has been looking for him/ has looked for him.
8. I have never seen a dirtier-looking dog.
⇨ This is the first time I have ever seen such a dirtier- looking dog
9. Mary rang hours and hours ago.
⇨ It it hours since Mary sang
10. It is ages since Alan visited his parents.
⇨ Alan hasn't visited his parents for ages

1, I regret selling my car.

=> I wish I hadn't sold my car.

2, My mother was the most warm-hearted person I have ever known.

=> I have never known a more warm-hearted person than my mother.

1, I regret selling my car

I wish I hadn't sold my car

=> sau regret là ving nên chuyển thành wish bỏ regret ving  thành had(not) + pp

2, my mother was the most warm-hearted person I have ever known

I have never known a more warm-hearted person than my mother

=> cấu thúc s + v + more + adv + than + s2

1 I've never known a more warm-hearted person than my mother

2 The older I get, the less I want to travel

3 geogre was impossible to be found everywhere

4 Getting into work this morning was a bit difficult

Cái này thì e phải xem cấu trúc viết câu chứ k có gì để giải thích nha

1. I have never known a more warm - hearted person than my mother

2. The older I get, the less I want to travel

3. George was impossible to be found everywhere

4. getting into work this morning was a bit difficult 

1. No one has challenged his authority before.
--> This is the first time.......someone has challenged his authority 
2. My mother was the most warm-hearted person I 've never known.
--> I have ....never known a more warm-hearted person than my mother
3. The police started looking for him two months ago.
--> For two months now the......police have been looking for him
4. I have never seen such a beautiful building.
--> It's the most......beautiful building I have seen
5. I have never read such a romantic story.
--> This is the most.....romantic story I have read
6. They have never had such a cold winter.
--> It was the......coldest winter I have had
7. You will never meet anyone more dangerous than Mr.Jones .
--> Mr.Jones is the most......dangerous person you have met
8. Man has never had such efficient servants as computer.
--> Computer is the most.....effecient servant man has.
9. How long have you learnt Spanish?
--> How long ago ........did you start learning Spanish

59. The last time I really enjoyed myself was your birthday party.

I haven’t __enjoyd__myself since your birthday party___________________________________________

60. It's nearly 20 years since my father saw his brother.

My father hasn’t __seen his brother for 20 years_______________________________________

61. When did you learn to drive?

How long is it __sicne you learned to drive________________________________________

62. The last time I went swimming was when we were in Spain.

I haven’t __gone swimming since we were in __Spain__________________________________________

63. You haven't tidied this room for weeks.

It’s weeks _since the last time you tidided_this room___________________________________________

64. We started looking for a flat 2 months ago and we are still looking.

We have _looked for a flat for 2 months____________________________________________

65. This is the first time I've been to a night club

I haven’t _been to a night club before_____________________________________________

66. They have never heard such a thing before.

This is the first time _they have heard such a thing_____________________________________

67. Noone has challenged his authority before.

This is the first time __Noone has challenged his authority____________________________________

68. She left university 2 years ago

It is _2 years since she left university_________________________________________________

69. My mother was the most warm-hearted person I've ever known.

I have _not met the most warm-hearted person my mother before________________________________________________

 I haven't enjoyed myself since your birthday party

 My father hasn't seen his brother for 20 years

How long is it since you learned to drive

 I hasn't swum since we were in Spain

It's weeks since the last time you tidied this room

We have been looking for a flat for 2 months

 I haven't been to a night club before

This is the first time they've heard such a thing

This is the first time one has challenged his authority.

It is for 2 year since she left university

1 My mother was the most warm-hearted person I’ve ever known.

=> I’ve never known a more warm-hearted person than my mother

Cách chuyển như thế này bạn được học chưa nhỉ.....

2. He lost his money simply because he wasn’t careful.

=> If he had been careful, he wouldn't have lost his money

Câu gốc ở thì quá khứ đơn, vậy chuyển thành câu điều kiện loại 3

3.He can speak French well enough to go to the conference.

=> His French is good enough for him to go to the conference

4.Martin had difficulty in accepting the loss of his money.

=> It was hard for Martin to accept the loss of his money

It was hard for sb to V: khó cho ai có thể làm gì

5.No matter how hard I tried, I could not open the window.

=> However hard I tried, I couldn't open the window

However adv S V : dù cho có làm gì như thế nào