1. a threat to
例句：Malaria, a disease which has been almost completely eradicated in the United States, is still a threat to travelers in some foreign countries.
例句：Although the politician was initially very sensitive to being criticized by the press, he quickly became more confident about responding to reporters’ sometimes pointed questions.
2. be proud of/ take pride in
例句：The Papago Indians of southern Arizona take justifiable pride in their traditional craft of basket-weaving, an art that has brought them fame throughout the Southwest.
3. take offence at
例句：The jury took offense at the prosecutor’s mocking tone but could deny neither the accuracy of the charges or the seriousness of the crime.
4.be familiar with/ be familiar to
例句：The signs of drug addiction are familiar to most doctors.
例句：Most doctors are familiar with the signs of drug addiction.
例句：At the highest level of competitive chess, players are so familiar with one another’s strategies that they can practically read their opponents’ minds.
5. regard as
例句：John Edgar Wideman is regarded as one of the most talented writers of the late twentieth century.