这句话中,supposed to be doing 这是伴随性状语么?What's that girl holding the stick supposed to be doing是否that girl holding the stick 是表语从句,然后后面supposed 是过去分词做状语后面过去分词接的是不定式

这句话中,supposed to be doing 这是伴随性状语么?What's that girl holding the stick supposed to be doing是否that girl holding the stick 是表语从句,然后后面supposed 是过去分词做状语后面过去分词接的是不定式
这句话中,supposed to be doing 这是伴随性状语么?
What's that girl holding the stick supposed to be doing
是否that girl holding the stick 是表语从句,然后后面supposed 是过去分词做状语
后面过去分词接的是不定式

这句话中,supposed to be doing 这是伴随性状语么?What's that girl holding the stick supposed to be doing是否that girl holding the stick 是表语从句,然后后面supposed 是过去分词做状语后面过去分词接的是不定式
What's that girl holding the stick supposed to be doing?
等同于What's that girl who is holding the stick supposed to be doing? 主句是What's that girl supposed to be doing? holding the stick 是现在分词作定语来修饰名词.
判断这类主从句一定要先拎出主句,再分析从句是修饰什么词,充当什么成分.这样学习,此类问题就迎刃而解.

不是。
what is that girl supposed to be doing才是句子要表达的意思
girl后面的holding the stick是定语
那个手拿木棍的姑娘想干什么？