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Anonymous Posted 17 years ago
Grammar

Present perfect tense analysis

Hi. Please tell me which is correct. Can we use any of them shown (see the underlined parts)? I think a past perfect tense isn't used with a word or phrase that shows a definite time, but in this sentence, a concern is with a subordinate clause (with or without a definite time word or phrase) (I am sure).

The programs have proved (have been proved??) so bad that almost everyone withdrew from it (yesterday/after two lessons/two days before today??).
  

Top answer

When we use present perfect, we are inferring in general one or two situations: 1) Something happened from the past and still happening. e. John has studied English for many years.

— Goodman

  • When we use present perfect, we are inferring in general one or two situations: 1) Something happened from the past and still happening.
  • e.
  • John has studied English for many years.
  • - Good English.
  • - Good John has studied English since 5 years ago.
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2 Answers
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When we use present perfect, we are inferring in general one or two situations:

1) Something happened from the past and still happening. i.e. John has studied English for many years. - Good English. John has studied English since he was a boy.- Good

John has studied English since 5 years ago. -Bad English. P.P. tense is never to be mixed with "ago", "yesterday", "last week"
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Hi. Thank you. This is one of many definitional entries for the word "since" in the Naver.com (online) dictionary.

StartFragment>

1. PREP

You use since when you are mentioning a time or event in the past and indicating that a situation has continued from then until now.

Jacques Arnold has been a member of parliament since 1987.

She had a sor
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