Hi,


I have just come across the following sentence in my text book.
For now, we need only know that these techniques require that extra bits (beyond
the bits of original data to be transferred) be sent from the sender to the
receiver.
Is there any difference in meaning if I put "only" before the verb "need"?
(I think that we have use "to know" in the new sentence, right?)
For now, we only need to know that these techniques require that extra bits (beyond
the bits of original data to be transferred) be sent from the sender to the
receiver.
Why we use the verb "be" here, not "are"?
Thank you.