英语语法：名词性从句 什么情况下可以省略连接词?1 作宾语是可以省略对吗 2 可否作介词宾语

首先名词性从句不可以省略连接词.ps:顾名思义,它在整个句子中相当于一个名词,所以去掉它主句是缺成分的（即主语、宾语、表语、同位语）,故包括主语从句、宾语从句等对应的从句.情况有很多种,连接词也各式各样,但都是...你说的对哦，宾语从句可以省略连接词，不好意思哈！就是当that引导一个不缺成分的陈述句做宾语从句时，that是没有意义的，通常可以省略。但作介词的宾语从句时不可以省略。不过这种情况很少，貌似只有except,but,besides，其他常见的“介词+连词+完整句子”，通常是跟在不及物动词后面，基本都带有疑问的语气像talk about, think about, 是不会跟一个表事实的that陈述句的。（以下内容摘自百度百科）有时候except,but,besides三个介词后可见到that引导的宾语从句。I know nothing about my new neighbor except that he used to work with a company.that引导宾语从句无意义，不充当句子成分常省略。但下列情况除外：1. 介词宾语从句的that不能省略。（度娘说不可以）2. and连接的两个从句，两个从句的that不能省略。He told me that he had two sons and that they both had gone to college.3. 当it作形式宾语时，在动词+it+宾语补足语+宾语从句结构中，that不省略。I heard it said that he had gone abroad.We found it impossible that he could finish it in such a short time.4. 当宾语从句前置时。That our team will win, I believe.