限定性定语从句和非限定性定语从句Their social worker, who stopped to check on Stevie every often, admitted Stevie and his mother had fallen between the cracks. 请问逗号后是不是非限定性定语从句,我该如何区分.谢谢

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限定性定语从句和非限定性定语从句
Their social worker, who stopped to check on Stevie every often, admitted Stevie and his mother had fallen between the cracks. 请问逗号后是不是非限定性定语从句,我该如何区分.谢谢

根据定语从句与先行词的关系是否紧密,可分为限制性定语从句和非限制性定语从句.非限制性定语从句与先行词的关系松散,只是补充说明,书写时常常使用逗号隔开.关系代词that不引导非限制性定语从句.
例:
Mr Smith,who came to see us yesterday,is a relative of my wife.
史密斯是我妻子的一个亲戚,昨天他来看望我们了.
They are coming back to us,which means that they have been refused elsewhere.
他们回来找我们了,那意味着他们在别的地方已被拒绝.

是的。是非限制性定语从句。非限制性定语从句是因为先行词范围十分明确,你知我知大家知,不用再限定了,只是更进一步补充说明一下,也可不用。
若果先行词范围不明确,则必须进行限定,而且不可省略,否则指代不明。