1.You are not good students.(改为否定句,在系动词are后面直接加not)
2.They won't be there for three days.(改为否定句,will not =won't)
Will they be there for three days?(改为疑问句,will 直接提前)
3.Does your mother always cook supper for you?(助动词Does提前)
My mother doesn't always cook supper for us.(改为否定句,not加在does 上)
4.Did Sally watch a football game yesterday?(根据一般过去时的时态,把Did提前)
Sally didn't watch a football game yesterday.(改为否定句,not 加在did 上)
5.Is Nancy going to go camping?( 改为疑问句,把系动词is 提前.)
Nancy isn't going to go camping.(改为否定句,把not 加在is 上)
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