1-He knows about science. (Meaning: He has some knowledge of science.)
2-He doesn't know about science. (Meaning: He has no knowledge of science.)
3-He knows about Einstein. (Meaning: He has some knowledge concerning Einstein.)I guess in this context, "Einstein" might be shorthand for "Einstein's theories".)
4-He doesn't know about Einstein. (Meaning: He has nothing about Einstein. )
Gratefully, Navi.
Top answer
None of them are natural. 'He knows a bit about science/Einstein'. ' Rover
— Rover_KE
None of them are natural.
'He knows a bit about science/Einstein'.
' Rover
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