do和did的用法：
根据语义的需要，do和did后面既可接名词作宾语，也可接动名词作宾语。
接名词作宾语：I do my homework in the evening. 我晚上做作业。
接动名词作宾语：It takes ages to do the shopping. 买东西真花时间。
Did the welfare state remould capitalism to give it a more human face?
福利国家是否重新塑造了资本主义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?太自以为是了!
The dark and narrow hiding place did not avail to save the fugitives.
黑暗狭窄的藏身地并未能挽救那些逃亡者。