They are't do their homework in the evening.(改错)是[他们晚上不做作业]的翻译,我觉_英语解答

They are't do their homework in the evening.(改错)
是[他们晚上不做作业]的翻译,我觉得没错,可是老师说错了.哪里错了?
急……

人气：401 ℃　时间：2019-10-17 07:55:11

解答

aren't 改为don't ,因为DO 是实义动词,变否定句时要借助助动词don't