I don't know how to do this job.请详细讲解其中的每一个语法知识点,

I don't know how to do this job.请详细讲解其中的每一个语法知识点, 请问：I don't know how to do this problem.中 i don't know how to solve this problem. I really don't know how to read this word. I really don't know how to explain this pnblem i don't know how to do it句型转换 i don't know ()to do.填what还是how I don’t know what to do.I don’t know how to do.（ × ） 第二句 how I don't know how to write this composition的中文意思 为什么I don't know what to do成立而I don't know how to do不成立 i don"t know what to do (next) 和i don"t know how to do (next I don't know "What to do 和 I don't know "How to do it"?哪个句子是