问题
选择题
When he walks _____ my desk, he often knocks my books ______ the desk.
A.pass; off
B.past; off
C.pass; on
D.past; on
答案
答案:B
题目分析:pass为动词,而第一空之前的词为动词,故选介词,所以将BC排除,knock sth on sth意思为用····敲···,为固定词组搭配。故选答案为B
点评:许多学生,对于pass的词性,注意对于介词off 与on的把握。