verb
BAD : She smiled to me as if she knew me.
GOOD : She smiled at me as if she knew me.
◆◆◆
smile at sb (NOT to ): 'For many parents the biggest thrill is when their baby first smiles at them.'
verb
BAD : She smiled to me as if she knew me.
GOOD : She smiled at me as if she knew me.
◆◆◆
smile at sb (NOT to ): 'For many parents the biggest thrill is when their baby first smiles at them.'
Longman Common Errors English vocabulary. Английский словарь распространенных ошибок Longman. 2012