My problem on the pronunciation&spelling|writing 4 both English&Chinese

I cannot establish a constant or stable connection between the pronunciation&spelling 4 many English words,

recently the browser plugin of Grammarly helps me a lot, and similarly, at the most time this situation also exists between the pronunciation&writing 4 many Chinese characters,

both of former means i know the pronunciation and i can speak, but i just can't spell it out and write it down correctly.