使某人确信某事
... ask for请求,要求 assure sb of sth 使某人确信某事 at a loss 茫然,不知所措 ...
向某人确保
... attach to依恋于,凭借于 assure sb of sth向某人确保… be covered with被…覆盖 ...
向某人保证某事
... (C) assure vt. 担保,保证 assure sb of sth 向某人保证某事 assure sb + that 子句 向某人保证…… ...
向某人保证
... ensure that+从句…保证… assure sb of sth向某人保证 pay no/little/much attention to sth不/很少/很多关注… ...