has体现三单,所以借助助动词does进行否定.
正确：doesn't have to
He has to help his mother clean the house today 改为否定句
4个回答
相关问题
-
he has to help his mother with the house work否定句
-
he helped his mother clean the house.这句话对吗?主要是helped和clean
-
He has to find his keys. 改为否定句
-
改否定句He has to make his bed every morning 改为否定句
-
His mother is ill.He has to look after his mother.(改为同义句)
-
has he moved to his new house yet 变否定句
-
Jack is helping his mother clean the house.为啥要用现在时
-
He has to do his homework first改为否定句
-
He often helps his mother do the housework.(改为同义句）
-
He cleaned his room last Sundy.改为否定句