求翻译：The present need is a systematic and comprehensive iwl simple method of phonics teaching thruout the priuiarv grades, that will enable any teacher, usiig airy good text in reading t.o successfully teach the phonetic facts, care fully grading the difficulties by eav and eonecutive steps是什么意思？

待解决 悬赏分：1 - 离问题结束还有