On the bus I saw an old woman ________ I thought was your grandmother.

问题描述:

On the bus I saw an old woman ________ I thought was your grandmother.
who 还是 whom
我选whom,但是答案是who.
为什么?还是……

是WHO
看它在句中做主语还是宾语,本句中是主语, an old woman who was your grandmother
i thought 只是个插入语.
另外,在现在的英语中,通常不再区分,统统用who, 不再用whom了