He thought Daniel was discussing the project with his classmates (否定句）
问题描述：
He thought Daniel was discussing the project with his classmates (否定句）
答
He didn't think Daniel was discussing the project with his classmateshe（）（）Daniel（）（）the project with his classmates四个空分别填didn't think ，was discussingdid和was能出现在一个句子里吗他不认为Daniel正与他的同学们讨论项目。He thought 变成否定为He didn't think ，与后面的was doing在时态上并不影响。