verb
1
BAD : I don't agree the people who say women should stay at home.
GOOD : I don't agree with the people who say women should stay at home.
BAD : In many ways I agree to his statement.
GOOD : In many ways I agree with his statement.
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agree with sb/sth = have the same opinion as: 'You can't expect everyone to agree with you all the time.' 'I tend to agree with you that the proposal is too risky.'
2
BAD : I don't understand why he doesn't agree the divorce.
GOOD : I don't understand why he doesn't agree to the divorce.
BAD : Conservationists will never agree the building of the motorway.
GOOD : Conservationists will never agree to the building of the motorway.
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agree to sth = be willing to accept or allow something: 'The bank manager has agreed to our request for a loan.'
3
BAD : I am agree that archaeological treasures should be protected.
GOOD : I agree that archaeological treasures should be protected.
BAD : In some ways I am agree with those who want stricter punishments.
GOOD : In some ways I agree with those who want stricter punishments.
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Agree is a verb (NOT an adjective).
4
See FACT 4 (↑ fact )