attentive
/əˈtentɪv; ə`tɛntɪv/ adj
~ (to sb/sth) giving attention (to sb/sth); alert and watchful （对某人[某事物]）注意的; 留心的; 警惕的
an attentive audience 聚精会神的听众[观众]
A good hostess is always attentive to the needs of her guests. 好客的女主人能随时留心客人的需要. > attentively adv
listening attentively to the speaker 专心地听著演讲人的话.