I don't care how he thinks about me at all.= I don't care in the slightest how he thinks about me.
这两个词组用法是一样的
后面第一句..He doesn't only .not only 不能生硬地直接代入的..这里助动词是does 就要换成doesn't
第二句对
第三句对
第四句这样的结构不好 not only ...but also...应该使用相同结构的宾语或者表语 最好改为:He's helpful as he's good at playing basketball.这类不需考虑结构平衡的句式