关于who和whom的用法,0aHe ofen helps the students who he thinks are
关于who和whom的用法,0aHe ofen helps the students who he thinks are not ...
关于who和whom的用法,0aHe ofen helps the students who he thinks are not quick at their study.为什么用who,为什么要作主语啊,不是宾格吗?求详解,尽量详细一点,我方便理解.