The speaker spoke of some writers and some books___were popular then.为什么填that而不填which?
问题描述：
The speaker spoke of some writers and some books___were popular then.
为什么填that而不填which?
答
先行词同时指人writers和物books，这种情况下用that。
答
some_that
定语从句里的修饰关系。
答
which只能指代物
而that既可指物也可指人
这里既指物又指人只能用that
答
因为又有人 “writers” 又有物 “books”，所以用that。 who指人，which 指物，又有人又有物，就用that