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Guest Posted 22 years ago
Grammar

Verb ('led' or 'lead'?)

The introduction of dengue type 2 in 1990 lead to outbreaks of DHF. Here the verb should be lead, led, or leads. Please advise and give reasons.
  

Top answer

'Led' - simple past tense (1990).

— Mister Micawber

  • 'Led' - simple past tense (1990).
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3 Answers
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'Led' - simple past tense (1990).
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These hyperendemic regions, where multiple strains of dengue virus are circulating, have lead to the emergence and spread of DHF. Again I have a problem, in this sentence is it "led".
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In the sentence, "lead" is a typo. It must be "led."
In perfect tenses(i.e. have + p.p.), past perfect(p.p.) is used at all times.
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