高一定语从句,4道选择题,在线求帮助.

问题描述:

高一定语从句,4道选择题,在线求帮助.
he is a man of great knowledge,__much can be learned.
a.in hom .b.about whom .c.from whom. d .of whom.
先行词是PERSON,用介词+WHOM.以上都是此形式,为什么选D呢?
please pass me the dictionary__cover is black.
a.which.b.its.c.whose.d. which of .
先行词是物,那不是用WHICH,THAT,WHOSE都行么?
is oxygen the only gas__helps fire burn?
a.that .b./ c.which .d.what.
求详细解答,定语从句好乱啊!

he is a man of great knowledge,__much can be learned.a.in hom .b.about whom .c.from whom.d .of whom.应该选C,句子意思:从他那里可以学到很多东西.please pass me the dictionary__cover is black.a.which.b.i...第二题为什么不可以用WHICH或者是WHOSE,它们的先行词不都是THING吗??上述第二题,就是要用whose啊,至于为什么不能用which,因为which一般是不做定语的那用OF WHICH搭配的话可以吗,你怎么没有看我的解释啊!!!每个题都解释了呀!