It's pretty much all I remember about anything.请求老师赐教，分析结构并解释一下这个句子中各个成分的修饰关系，比如：pretty much是相当于一个副词修饰all吗？表语是all还是I remember about anything？它们各个成分之间的关系是怎样的？
...orother family members, and they tend not to be one-shot deals. 这里的be in是什么意思，是什么语法结构，翻译成什么。还有这里的by是充当插入语吗？如果是充当插入语，怎么和后面的parents or other family构成的介宾结构？
...charge? Yes, you win a kewpie doll. They’re going to
charge 1%. Remember when I showed you that financial planners who charged you
1% of your assets under management were slowly, surreptitiously siphoning away
your money and charging you for (what) was
almost assuredly underperformance in your inv...
...黄想让你知道这确实有影响。他用塑料垃圾建造出了巨大的雕塑，使观众重新审视他们与一次性塑料产品的关系。At the beginning of the year, the artist built a
piece called “Strawpocalypse,” a pair of 10-foot-tall plastic waves, frozen
mid-crash. Made of 16...
Behind the rotunda the slender tree with yellow leaves
down drooping.
我能感觉到drooping是修饰down的，对down进行补充说明，或者做方式状语。请问对单个副词进行修饰，还可以说这里的现在分词作状语吗？还是作副词down的同位语?
谢谢！