One difficulty is that almost all of what is called behavioral science continues to trace behavior to states of mind, feelings, traits of character, human nature, and so on.
1.这里what作为关系代词引导定语从句，类似of+what引导宾语从句，what在句中做主语？可以如此表述吗？
2.定语从句中，whose表示……的，可以转化为：the+名词+of+which（whom）
那样of which，of whom，of what，这三个状况在句子中遇见之后怎么样区别？
譬如One difficulty is that almost all of what is called behavioral science continues to trace behavior to states of mind, feelings, ……这句话中的of what可以用of which来替代吗？？
3.She is pleased with all that you have told.这里的that可以省略吗？
One difficulty is that almost all of what is called behavioral science continues to trace behavior to states of mind, feelings, traits of character, human nature, and so on.
参考译文:难点之一在于所谓的行为科学几乎全部仍然是从心态,情感,性格特点,人性等方面去探寻/追溯行为的根源。
all of what is called behavioral science【主语】// continues【谓语动词】// to trace behavior to states of mind, feelings, traits of character, human nature, and so on【宾语】 ，what=the thing that 同时在宾语从句中作主语成分。
【2】定语从句中，whose表示……的，可以转化为：the+名词+of+which（whom）
那样of which，of whom，of what，这三个状况在句子中遇见之后怎么样区别？
解答：whose引导定语从句可以转为the+名词+of+which（whom）
We live in a house whose windows face south.=We live in a house the windows of which face south
大家居住在一所窗户朝南开的房屋里。
He is the man whose car was stolen.=He is the man the car of whom was stolen.
他就是汽车被窃的那个人。
譬如One difficulty is that almost all of what is called behavioral science continues to trace behavior to states of mind, feelings, ……这句话中的of what可以用of which来替代吗？？
解答：以上what不是引导定语从句，而是引导介词of宾语从句，然后这个主语从句作介词的宾语，不能用of which替代
【3】She is pleased with all that you have told.这里的that可以省略吗？
解答： that you have told为定语从句修饰代词all可以省略that, all that=what
