Cigarette smoking is believed by most researchers in the field to be an important cause in the development of lung cancer and throat cancer and is believed to have much to do with some other kinds of cancers.
老师，have much to do with字面意思难理解，是固定搭配吗，为何纸质词典查不到，用金山词典——常用词典查到，不知对不对？
have much to do with：应该是一个“固定词组”，记住即可。意为“与...有非常大关系”。一般词典都有网站收录。
词组分解理解：have（有）much（不少的事情）to do （去处置）with（与）。
字面意思是：与...之间有不少的事情去处置。
引申意思是：与...有非常大关系/关联。
推而广之，还有这类类似的词组：
1. have a lot to do with
2. have little to do with
3. have something to do with
4. have nothing to do with
以上几个词组的意思，我想，网友自己就能猜测出来。
