He will be away for two months 为什么用BE呢?

He will be away for two months 为什么用BE呢? he will be away for two months He will be away for two months. he will be away for two months中为什么用for而不用in 一般将来时不是没有be 那为什么He will be away for two months .是一般将来时,而不是将来 He will be away for two mouths.介词为什么用for? You will be grounded for two months! 请说明原因He ---- for two months.I hope he will be back soon.A.ha We will be _____(离开）for two months. He -------home for about two weeks last year.A will be away HE will be there for two days He will be a____ for two weeks