Hi harun, thats a good question. There are 3 answers I can give.
1. Listen to English TV such as BBC news or cnbc-e or e2.
2. Speak with people in English more if possible.
3. Go to England for a few weeks.
Hope this was helpful?
Maybe if you live in Antalya like I do you could practice conversation with me.
English teacher living and working in Antalya.