why does this phenomenon appears中的appears到底加不加“s”

来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/27 00:02:49
whydoesthisphenomenonappears中的appears到底加不加“s”whydoesthisphenomenonappears中的appears到底加不加“s”whydoesthi

why does this phenomenon appears中的appears到底加不加“s”
why does this phenomenon appears中的appears到底加不加“s”

why does this phenomenon appears中的appears到底加不加“s”
不加,这句话要用动词的单三形式,动词do的单三形式是does,你在前面已经用了单三,所以后面的动词要用原形.

不加

呃。。。。肯定不加呀,助动词后面跟动词原形,这里有了助动词does,所以不加S

这是句一般疑问句,does是疑问助词,appear用动词原形。
同样的:
why did this phenomenon appear?