John loves reading, so he often gets lost in ____

显示全部楼层 · 2010-6-6 17:21:26

he is reading and doesn't take a break.
A.that
B.what
C.when D.while
为什么,请详细解答,谢谢!

千问 · 2010-6-6 17:21:26

B what在这里引导了一个宾语从句，what在从句中做的是reading的宾语若用A that，应是lost inthe book that he is reading CD显然都不对

千问 · 2010-6-6 17:21:26

选B。what一方面做reading的宾语，一方面做从句的先行词。宾语从句

千问 · 2010-6-6 17:21:26

a代指