分类：教育/科学-学习帮助
问题：关于定语从句that和which在什么条件下可互换，什么条件下不 
that和which在什么条件下可互换，什么条件下不能？
回答：        1,在介词后只有which,不用that，如I like the house around which there are plenty of trees;

        2,既代人又代物的，用that,不用which;

        3,被修饰词前有every,only,any,some,almost,nearly等词时，只用that.