his face turned still ---- (red)

LS bullshit,他前面要是有more,还变形red干吗,再说”更红”也不能说more red,而是redder。这句话用redder。这里面still是”甚至”的意思,若是要句子通顺就一定要用redder,翻译成”他的脸甚至更红了．”