...再延续重复,就要用一般过去时态。请比较:19 1) Have you ever fallen off a horse?2) Did you ever fall off a horse?妙语点睛在例句1)中,用了现在完成时态,意味着“骑马”这个活动没有结束,将来还要骑马,因此fall off a horse这个事件可...
来自一组对话:W: What's going on? Youdon't look so good!M: I have a running stomach. I think I got some bad food at lunch today.根据语境,文中的stomach应该是错误吧?应该改为stomachache.辛苦专家老师指导。
...here is a kind of false precision being hawked by people claiming they are doing ancestry testing," says Trey Duster, a New York University sociologist.请问老师,上述句子中为什么要用being hawked做precision的定语?不能直接用hawked吗,这已经表示被动了呀,为什么...