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Gray grape 170 Posted 9 years ago
Grammar

I want to know the structure of these sentences.

One study in the UK appeared to show that smokers had a higher survival rate than nonsmokers over a twenty-year time period.

That is, until dividing the participants by age group showed that the nonsmokers were significantly older on average, and thus, more likely to die during the trial period, precisely because they were living longer in general.



I kbow the meaning of this article but I can catch the structure of the sentence starting with 'That is~'.


Is it possible the sentence without main clause?

  

Top answer

gray grape 170 Is it possible that the sentence does not have a main clause? That is, until X . ) The sentence above is a main clause.

— AlpheccaStars

  • gray grape 170 Is it possible that the sentence does not have a main clause?
  • That is, until X .
  • ) The sentence above is a main clause.
  • " The conjunction "until" introduces a dependent clause.
  • For example: We thought we were late for the lecture.
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1 Answers
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gray grape 170Is it possible that the sentence does not have a main clause?

That is, until X. (X is some condition.)

The sentence above is a main clause. The subject is "that" and the verb is "is." The conjunction "until" introduces a dependent clause.

For exa

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