是不是不定时做状语时,不能用逗号与句子隔开；而动词Ing形式做状语时,必须用逗号与句子隔开?

这种情况不绝对.如不定式作目地状语时常不用逗号分开而作结果状语时常用逗号分开.如
He came here to see me.这句是目地状语,不分开.
He hurried to the station,only to find the train had gone.这句是结果状语常分开,但个别时候也有不分开的.
现在分词作状语时也是两种情况都有.如
They are standing there talking and laughing.这句是伴随状语可分可不分.
He made great progess,making his parents happy.这句是结果状语,这时常用逗号号分开.