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Taruns1008 Posted 11 years ago
Grammar

Know + gerund or infinitive

Can we use both gerund and infinitive with Know.

#1 He knows swimming.

#2 He knows to swim.

#3 He knows how to swim.

#4 He doesn't know to swim.

#3 is correct but why Sentence #4 is incorrect? I have doubt about #2 if it's correct or not.

#5 He knew to stay out of sight. (similar to #2)

#6 He knew how to stay out of sight.

What is the difference b/w #5 and #6 in context of meaning?
  

Top answer

#1, #2 and #4 are possible, but they mean something different from #3. "He knows swimming" means that he possesses wide general knowledge about the sport or recreation of swimming. It does not simply mean that he can swim himself.

  • #1, #2 and #4 are possible, but they mean something different from #3.
  • "He knows swimming" means that he possesses wide general knowledge about the sport or recreation of swimming.
  • It does not simply mean that he can swim himself.
  • "He knows / doesn't know to swim" means that he knows / doesn't know that he ought to swim (in some situation explained by the wider context).
  • It would not be a very common thing to say.
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2 Answers
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#1, #2 and #4 are possible, but they mean something different from #3.

"He knows swimming" means that he possesses wide general knowledge about the sport or recreation of swimming. It does not simply mean that he can swim himself.

"He knows / doesn't know to swim" means that he knows / doesn't know that he ought to swim (in some situation explained by the wider context). It would
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taruns1008Know
1. to know how to ... = to be able to ...
2. to know (enough) to ... = to know that one should ...
3. to know -ing = to be an expert at ...

1. Larry knows how to speak French. / Jane knows how to knit. / Sam knows how to drive a tractor.
2. Sue knows (enough) to remain silent about Mary's divorce. / Frank knows (en

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