Meaning of EFFECTIVE in English

EFFECTIVE

adjective

1

BAD : British farmers receive only a little aid since their farms are relatively effective.

GOOD : British farmers receive only a little aid since their farms are relatively efficient.

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See note at EFFICIENT (↑ efficient )

2

BAD : Aspirin is very effective to relieve pain.

GOOD : Aspirin is very effective in relieving pain.

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be effective in doing sth : 'Doctors soon realized that this drug was also effective in relieving the symptoms of arthritis.'

Longman Common Errors English vocabulary.      Английский словарь распространенных ошибок Longman.