run after sb
(no passive 不用於被动语态)
(a) run to try to catch sb; chase sb 追赶某人; 追逐某人
The dog was running after a rabbit. 狗在追一只兔子.
(b) (infml 口) (esp of a woman) seek sb´s company (in order to have a romantic or sexual relationship with him) (尤指女性)追求(男子)
She runs after every good-looking man she meets. 凡是漂亮的男子, 她见一个追一个.