I don't want both the books. 我不是两本书都要。
Both (the) windows are not open. 两扇窗子并不都开着。
三、 every…的否定式:"不是每……都……" 例如:
Not every book is educative. (或:Every book is not educative.) 不是每本书都有教育意义的。
Not everyone likes this book. 并非人人都喜欢这本书。
This flower is not seen everywhere. 这花并不是随处可见的。
四、 always的否定式:"并非总是(并非一直)……" 例如:
He is not always so sad. 他并不是一直都这样悲伤。
五、 entirely, altogether, completely 和quite 的否定式:"不完全……","并非完全……" 例如:
The businessman is never to be entirely trusted. 不可以完全信任商人。