The evidence that this is the correct analysis of the sentence comes
from the whole of the rest of the grammar, all of which provides, by virtue of
the coherence of the description it gives, the evidence that the lines of
separation have been drawn in the right place.曹老师,这句话最后一...
新编英语第三版课文里的一句:The part of my brain that switches off when I do anything strenuous signaled shutdown and my feet moved metronomically.这里的signaled shutdown是什么意思,充当什么成分?