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Chan-Seung Lee



Joined: 03 Dec 2005
Posts: 1032

PostPosted: Fri Feb 02, 2007 5:51 am    Post subject: by now Reply with quote

Quote:
1.They were within striking distance of the shore by now.
2.They have been within striking distance of the shore by now.
3.They would have been within striking distance of the shore by now.
4.They have been playing tennis for two hours by now.


What is correct and why?

Thanks.
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Eric Thompson



Joined: 25 Nov 2006
Posts: 148
Location: Angeles, Pampanga, Philippines

PostPosted: Sat Feb 03, 2007 6:01 am    Post subject: Reply with quote

Dear Chan-Seung, 3. is correct if you add an 'if' clause, like 'if they hadn't run out of fuel'. Otherwise, 1., 2., & 4. are not correct. With the 'by now' ending phrase, the verb of the sentence should have either 'would', 'should', or 'could' as a helping verb, or be in the past perfect tense. Why? That's the way English is. 'By now' has a limited use. OK?, Eric
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