verb
1
DUBIOUS : The government should forbid cigarette advertising.
GOOD : The government should ban cigarette advertising.
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ban (or prohibit ) = forbid someone from doing something by making it illegal: 'The proposed treaty banning all nuclear testing has received widespread approval.' 'International Law prohibits the use of chemical weapons.'
2
BAD : There should be a law which forbids to have more than two children.
GOOD : There should be a law which forbids couples to have/from having more than two children.
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forbid + sb + to do/from doing sth : 'My parents have forbidden me to stay out after ten o'clock.' 'Her father ought to forbid her from seeing the boy again.'