Commonly,fields are natural home to frogs,where they enjoy a comfortable life feeding on pest harmful to crops ,helping solve the big headache of farmers. 谢谢拉,在线等啊~
commonly是副词修饰整个句子,主句是fields are natural home to frogs.非限制性定语从句where they enjoy a comfortable life feeding on pest harmful to crops修饰fields.动名词分句helping solve the big headache of farmers做定语修饰前面的从句。
Commonly 作为插入语 fields are natural home to frogs 这是主语 where they enjoy a comfortable life feeding on pest harmful to crops 这句作为主句的地方作为非限制性定语从句 helping solve the big headache of farmers这句作为主句的伴随状态