do和did的用法：

　　根據語義的需要，do和did后面既可接名詞作賓語，也可接動名詞作賓語。

　　接名詞作賓語：I do my homework in the evening. 我晚上做作業(yè)。

　　接動名詞作賓語：It takes ages to do the shopping. 買東西真花時間。

　　Did the welfare state remould capitalism to give it a more human face?

　　福利國家是否重新塑造了資本主義制度使其看上去更具人情味?

　　How did he know what she was thinking? — it was a liberty!

　　他怎么能知道她在想什么?太自以為是了!

　　The dark and narrow hiding place did not avail to save the fugitives.

　　黑暗狹窄的藏身地并未能挽救那些逃亡者。