It seems gramatically correct; I am also fine with "need" used in continuous time. But I'm wondering if it is used in spoken language... For example, I want to take a shower (which might take a while) so I ask my roommate if he is fine with that:
Is this the proper way to do it? Or would native speaker come up with something easier? | |||||
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7 | Will you need... and Will you be needing... differ in that the second of these is a less direct and hence more polite way to phrase the question. Swan in Practical English Usage (p196) explains it well:
Need is another of the verbs that are not normally used in the progressive form, but can be in contexts such as those exemplified above. | ||||||||
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http://english.stackexchange.com/questions/125800/is-phrase-will-you-be-needing-correct