why not后面要不要加to

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whynot后面要不要加towhynot后面要不要加towhynot后面要不要加towhynotdo...=whydon''tyoudo...不要不确定,我记得要加,whynottodo和whydono

why not后面要不要加to
why not后面要不要加to

why not后面要不要加to
why not do...=why don't you do...

不要

不确定,我记得要加,why not to do和why do not you do,这是两种句型。