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Lucas21c Posted 11 years ago
Grammar
Tense and aspect
Could you tell me which one is okay among (A1)~(C3) in the following sentences? Thank you.
A. She [ (A1) researched / (A2) had researched / (A3) had been researching ] the human genome for ten years when she became the laboratory chief.
B. She [ (B1) researched / (B2) had researched / (B3) had been researching ] the human genome since 2000 when she became the laboratory chief.
C. She [ (C1) researched / (C2) had researched / (C3) had been researching ] the human genome after she became the laboratory chief.
A. She [ (A1) researched / (A2) had researched / (A3) had been researching ] the human genome for ten years when she became the laboratory chief.
B. She [ (B1) researched / (B2) had researched / (B3) had been researching ] the human genome since 2000 when she became the laboratory chief.
C. She [ (C1) researched / (C2) had researched / (C3) had been researching ] the human genome after she became the laboratory chief.
Top answer
A. She had researched the human genome for ten years when she became the laboratory chief. If using A2, the research was done before she was chief.
- A.
- She had researched the human genome for ten years when she became the laboratory chief.
- If using A2, the research was done before she was chief.
- B.
- She had been researching the human genome since 2000 when she became the laboratory chief.
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2 Answers
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A. She had researched the human genome for ten years when she became the laboratory chief. If using A2, the research was done before she was chief.
B. She had been researching the human genome since 2000 when she became the laboratory chief. If using B3, the research was done between 2000 and her appointment.
C. She researched the human genome after she became the laboratory
B. She had been researching the human genome since 2000 when she became the laboratory chief. If using B3, the research was done between 2000 and her appointment.
C. She researched the human genome after she became the laboratory
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1. Can I use (A3)? If "Tom had been living in New York for 3 years when I met him in 2010" is acceptable, could you tell me why (A3) isn't?
2. Can I use (B2)? If "I had worked in Australia since 2005 when I was offered a new job in the USA" is acceptable, could you tell me why (B2) isn't?
3.
(1) Are "She [ have researched / have been
2. Can I use (B2)? If "I had worked in Australia since 2005 when I was offered a new job in the USA" is acceptable, could you tell me why (B2) isn't?
3.
(1) Are "She [ have researched / have been
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