核心问题
（1）He does everything in the house except put the children to bed. (CGEL)
(2) It had no effect except to make him angry. (Evans)
在句(1)中 except 后接动词原形,而在第二句中 except 后接带 to 的不定式。这是为什么呢?
词典解答
如果介词 except 之前含有动词 do(包括 do 的各种语法形式)，则 except 后通常接动词原形(但亦可加 to)；如果介词 except 之前是其他动词，则 except 后应接带 to 的动词不定式 (to-v):
- He doesn't want to do anything except help me. (Dreiser) 除了帮助我,任何事情他都不
except do/except to 458
想做。
-
She can do everything except cook. (LDCE) 除了烹调之外, 她什么事都能干。
-
There was little I could do except wait. (EED) 除了等待,我几乎什么事也不能做。
[参见 to(动词不定式符号) , but ]