Listen to English podcasts as much as possible when doing other things - on the bus, cooking, doing the dishes, going for a walk etc.

Listen, then try to repeat what you heard using your own words.

Clean out your ears.

listen to songs,movies series and news in english.

a lot of English audio input,but must understandable for you,and tell u what,u need to got at least 4 hours by listening to those materials everyday,it's a long term and enjoyable road.