It was not until ... that ..., sau "that" nhớ bỏ (didn't) nhưng các trường hợp (couldn't/ weren't/ wasn't/ hadn't) sau that chỉ bỏ "not" mà thôi.
14. He couldn't go to school until his father came home.
-> It..................................................................................................
15. Lan couldn't study English until she was 15.
-> It.......................................................................................................
16. Nam could not buy a house of his dream until he was forty.
-> It.......................................................................................................
17. She hadn't been a good teacher before she taught at the university.
-> It........................................................................................................
18. He hadn't been a bad husband before he got married to Marry.
-> It............................................................................................................
19. Anna wasn't punished until her manager knew the truth.
-> It............................................................................................................
20. Hieu didn't study hard until he failed this exam.
-> It..............................................................................................................
14. He couldn't go to school until his father came home.
-> It was not until his father came home that he could go to school.
15. Lan couldn't study English until she was 15.
-> It was not until she was 15 that she could study English.
16. Nam could not buy a house of his dream until he was forty.
-> It was not until he was forty that Nam could buy a house of his dream.
17. She hadn't been a good teacher before she taught at the university.
-> It was not until she taught at the university that she had been a good teacher.
18. He hadn't been a bad husband before he got married to Marry.
-> It was not until he got married to Marry that he had been a bad husband.
19. Anna wasn't punished until her manager knew the truth.
-> It was not until her manager knew the truth that Anna was punished.
20. Hieu didn't study hard until he failed this exam.
-> It was not until he failed this exam that Hieu studied hard.
#\(Cụt cạp cạp\)
#\(yGLinh\)
