> 英语 >
He has to help his mother clean the house today 改为否定句
He ------ ------- help his mother clean the house today.
人气:177 ℃ 时间:2020-03-21 11:32:09
解答
has体现三单,所以借助助动词does进行否定.
正确:doesn't have to
推荐
猜你喜欢
© 2026 79432.Com All Rights Reserved.
电脑版|手机版