for nowadays后面 是完整的句子还是从属于前面的?这两个部分用逗号隔开是否符合语法规范 it is widely accepted that we should not be satistied with our present achievement,for nowadays new challenges and competition never stop.
for意思上相当于because,引导原因状语从句,必须用逗号隔开. 二者区别: because(是从属连词)引导的从句可放在主句前或后面,表示因果关系; for(并列连词)引导的从句只能放在句末,有时表示因果关系,有时则不表示因果关系; 如:It rained last night, for the ground is wet this morning.(只是表示推断)