CarrieL721 Wrote:3. about " comma+ now verb-ing/verb-ed/with/other prepositions....", are they the same with the sentences without "now"?
i'm guessing that this is a question about grammar/mechanics. (it's pretty obvious that extra words affect meaning.)
"now" is an adverb. like other adverbs and modifiers, it has no effect on the surrounding grammar.
in general, though, i don't think this kind of structure could make sense.
consider:
• if "now" is included, then, presumably, the previous part describes something in the past. (if the sentence is already talking about the present, there's no reason to include "now".)
...but...
• __ing modifiers must adopt the timeframe of the sentence to which they're attached.
these ideas are fundamentally contradictory. (if the __ing modifier is appropriate, then "now" will be redundant; if "now" is necessary, then the __ing modifier won't work.)