nowdays there is a phenomenon that has aroused a heated debate.我想_英语解答

nowdays there is a phenomenon that has aroused a heated debate.我想问的是这里从句内为什么用的是has
- - 其实问题更具体一点就是,have和has除了以人为主语的句子里面我分得清对应的人称所用的词以外,其余各种从句内什么时候have,什么时候has都不是很清楚,

人气：352 ℃　时间：2020-09-22 03:57:31

解答

因为这里的has修饰的是 "there is a phenomenon".从is,a ,以及单数形式的phenomenon,都可以看出这个phenomenon是单数,所以用has.
再举个例子,There are many girls that are wearing dresses today.这里就是用 are,复数形式修饰前面的"girls",因为是there are,many,和复数形式的girls.