可以的,about是介词,从语法功能来分析它的后面可以跟名词,代词,以及名词性从句或起代词作用的从句,如此看来about后面可以加从句。
一般可以的，介词后面一般可以加其名词或代词作用的从句，注意介词和从句之间的搭配关系就行了。比如说；she is really suspicious of what tom has told her. we shall never care about what kind of opinion others hold about us.
只可以接除that之外的宾语从句