In the U.S.Mother's Day is a holiday celebrated on...(有关celebrated)In the U.S.Mother's Day is a holiday celebrated on second Sunday in May.请问这句话不是一般现在时吗?为什么celebrate + d

In the U.S.Mother's Day is a holiday celebrated on...(有关celebrated)In the U.S.Mother's Day is a holiday celebrated on second Sunday in May.请问这句话不是一般现在时吗?为什么celebrate + d
In the U.S.Mother's Day is a holiday celebrated on...(有关celebrated)
In the U.S.Mother's Day is a holiday celebrated on second Sunday in May.
请问这句话不是一般现在时吗?为什么celebrate + d

In the U.S.Mother's Day is a holiday celebrated on...(有关celebrated)In the U.S.Mother's Day is a holiday celebrated on second Sunday in May.请问这句话不是一般现在时吗?为什么celebrate + d
被动语态啊/
因为holiday 是被celebrated

过去分词做holiday的后置定语

the second answer is accurate