复合词的用法grandmother是不是复合词

复合词可以由两个、三个、四个、甚至更多个自由语素构成,构成复合词的语素可能已带有派生词缀或屈折词缀,复合词形成后也可以再加上派生词缀或经历屈折的过程。所以grandmother 应该算是复合词。其他举例：1) postage stamp:(post + -age) + stamp 2) post-office worker:(post + office) + (work + -er) 3) post-office savings bank:(post + office) + {[(save + -ing) + -s] + bank} 4) ex-boyfriend:ex- + (boy + friend) 5) schoolmasterly:(school + master) + -ly 6) as-a-matter-of-factly:(as + a + matter + of + fact) + -ly