[Grammar] Poor housing is known to have significantly affected educational achievement.

sania-baharat

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Jul 10, 2017
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Are these two sentences sentence OK?

Poor housing is known to have significantly affected educational achievement.

Poor housing have siginificanetly affected educational achievement.
 

emsr2d2

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Are these two sentences [strike]sentence[/strike] OK?

Poor housing is known to [STRIKE]have[/STRIKE] significantly [STRIKE]affected[/STRIKE] affect educational achievement.

Poor housing [STRIKE]have[/STRIKE] [STRIKE]siginificantly[/STRIKE] significantly [STRIKE]affected[/STRIKE] ​affects educational achievement.

The past tense would be appropriate if the situation no longer existed. I think it probably does still exist so I have changed it to the present tense to indicate a regular/habitual fact.
 
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