“的证书”造句

“作为外语的英语教学”只有两种国际上认可的证书
There are only two internationally recognised certificates in Teaching English as a Foreign Language.

壁炉的右边是各种镶框的证书
To the right of the fireplace are various framed certificates.

中学生得到的证书叫文凭.
The paper which the student receives in high school is a diploma.