我终于找到答案了.
1. expect so / not 的用法
在动词think,expect,believe,suppose,fancy,fear,hear,hope,imagine 等词后面可以用 so 代替上文所提及的名词、形容词或从句,如：I think / believe/ suppose / imagine / expect / hope / am afraid so.否定句里也可用not.如：I don't t hink / believe / suppose
/ expect so 或 I think / believe / suppose / expect / hope/ am afraid not,
但不说 I don't hope / guess / fear so.
【单项选择】
( ) 1. -- Do you think it's going to rain over the
weekend? -- ____.
A. I don't believe B. I don't bdieve it
C. I believe not so D. I believe not
( ) 2.-- The boys are not doing a good job at all, are they?
-- ____. (2003 北京春招)
A. I guess not so B. I don't guess
C. I don' t guess so D. I guess not
【参考答案及简析】
1. 选D believe可以说I believe so,I don't believeso,I beIieve not．
2. 选D guess可以说I guess so,I guess not,但不说I don't guess so.