帮忙看看这句英语写的有错么Common as the phenomenon is,the problem behind

应该这样改,Common as the phenomenon is the problem behind (which) is worth our attention。把it改成which,这是一个长句,就不能出现两个主语（problem和it不能共存）,把it改成which这就变成了定语从句,就可以了。