发生过

1.
happened
有过:这里的意思是“发生过”(happened),主语可以是lying,也可以是it。一个……一个……一个:One of them... another... and the thi…
blog.yeshj.com|Based on 11 pages
2.
doing
to do和doing作主语是有什么去区别?_百度知道 ... doing 动名词 做着某事 doing 发生过 like to do 一次性的 ...
zhidao.baidu.com|Based on 4 pages

Sample Sentence

Definition:
Category:AllAll,OralOral,WrittenWritten,TitleTitle,TechnicalTechnical
Source:AllAll,DictionaryDictionary,WebWeb
Difficulty:AllAll,EasyEasy,MiddleMiddle,HardHard