what happening?如果错了,解释以下what happened?为什么不能改为what did happen?

问题描述:

what happening?如果错了,解释以下what happened?为什么不能改为what did happen?

看来你对动词和时态很不熟悉,“what happening?”是错的,这句话主语是what,动词是happen,而happening是现在分词,说明这句话是进行时态,但进行时态的构成是“be+现在分词”,而不是孤零零的现在分词,所以正确的说法是...