How often do you have your hair___?是填cut还是cutting?why?

问题描述:

How often do you have your hair___?
是填cut还是cutting?
why?

用cut ,因为cut过去分词也是cut,而这里应该填一个过去分词表示剪掉头发

cut have sth. done 固定用法~ 让你的头发被剪~
have sb. do 这两个词组要区别~

cut
have sth.done 让某事被做,词组.
cut的过去分词还是cut
另外
have the hair cut表示理发,是词组.
所以用cut

是cut
haircut就是理发的意思