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Iboon Posted 12 years ago
Grammar

tense shift

Hi All,

Hi

"Further analysis on the specific sorbents is needed to determine how to best build artificial trees, and a method of storing the carbon after it has been collected must also be analyzed." ( A literature review of CO 2 capture directly from ambient air, Joshua Fabian, Massachusetts Institute of Technology, Department of Civil and Environmental Engineering.)

Why does the 2nd independent clause ("a method of storing the carbon after it has been collected must also be analyzed.") shift the tense from a present perfect to a present tense?

Can I say "a method of storing the carbon after it is collected must also be analyzed." or "a method of storing the carbon after it has been collected must also have been analyzed." ? Do they have the same meaning?

and Is "Futher" an adverb modifying "to determine" ?

Thank you
  

Top answer

Hello, iboon—and welcome to English Forums. ") shift the tense from a present perfect to a present tense? Storage follows collection.

— Mister Micawber

  • Hello, iboon—and welcome to English Forums.
  • ") shift the tense from a present perfect to a present tense?
  • Storage follows collection.
  • " Yes.
  • " ?
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2 Answers
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Hello, iboon—and welcome to English Forums.
iboonWhy does the 2nd independent clause ("a method of storing the carbon after it has been collected must also be analyzed.") shift the tense from a present perfect to a present tense?
Storage follows collection.
iboonCan I say "a method of storing the carbon after it is collected must also be
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