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fw
Joined: 12 Oct 2005
Posts: 361
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 Posted: Sun Aug 14, 2011 6:40 pm Post subject: was previously/has previously been |
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Which is appropriate for the blank in the passage below, #1 or #2?
1. was previously
2. has previously been
A discovery differs from an invention. A discovery is something found in nature that ( ) unknown to people. A new chemical substance is an example of a discovery. A new type of engine is an example of an invention.
I think #1 is appropriate, but I am not sure about #2. What do you think? |
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2006
Joined: 27 Nov 2006
Posts: 610
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| Posted: Mon Aug 15, 2011 7:43 pm Post subject: Re: was previously/has previously been |
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| fw wrote: |
Which is appropriate for the blank in the passage below, #1 or #2?
1. was previously
2. has previously been
A discovery differs from an invention. A discovery is something found in nature that ( ) unknown to people. A new chemical substance is an example of a discovery. A new type of engine is an example of an invention.
I think #1 is appropriate, but I am not sure about #2. What do you think? |
1. is correct.
2. is wrong.
'had previously been' would be correct. |
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