hsbinfy wrote:
look at the non-underlined portion carefully:
once considered dull-witted brutes this suggests that Neanderthals existed .they don't now
So have had would be correct here to show that the effect is still true now,but they are not existing.
Hi hsbinfy, it's slightly more complex than this. The usage here is nothave had , butto have had . This usage is calledperfect infinitive and is quite sophisticated in its application.
The perfect infinitive indicates that its action happenedbefore the
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