【词组讲解】

But there was speculation last year that Jackson had secretly converted to Islam.
但也有传言称，杰克逊已于去年秘密改信伊斯兰教。

convert to 表示“ (使)改信，皈依(另一宗教) ”；“ (使)转而变为……”

Many people willingly converted to Buddhism.
很多人情愿皈依佛教。

My daughter has converted me to pop music.
我女儿使我转而喜欢流行音乐。