这是病句吗？ failed是形容词做表语解释：失败的Does anybody observe the traffic regulations? In most cases,I think so. Is anyone failed to do so?
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不是病句，比如，he is glad to do it. 中的高兴也是形容词,把它变成问句即可我好象都回答的是你的问题啊?有事可以给我发邮件.wlinyun520@
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Has anybody observed the traffic regulations? In most cases,I think so. Did anyone fail to do so? Is anyone failed to do so? 是病句to do so是什么成分？没有房子住