If there is a certificate, fill in the name of the certificate, such as level 4 and level 6. What foreign languages do you know: English, how much: English band 4/band 6; Or directly level 6 or level 4.
If you don't get the certificate, you can write it on your resume. I can meet the actual needs in listening, speaking and writing. Then it is very important to show your ability with English-related cases. So examples are very important, because English activities at least show that you know the basic knowledge of English and are interested in English.