Plz check.

[Anonymous]

1.Is there any difference between:
monotone-monotonous ( voice)
decouple-uncouple
wind up- end up
2.What prefix can be added to form the opposite word of Punctual?
3.What does sloan mean?
4.I see these phrases quite often, but don't know what they mean:
Hasta la vista
Living la vida loca
5.Do we have to put since at the beginning of a sentence when it means "because"?For instance:
Since you're hard working. you'll pass the exam.
You'll pass the exam, since you're hard working.( Is this incorrect?)

[Pete]

1. Is there any difference between:
>monotone-monotonous ( voice) [Monotone specifically means maintaining the same pitch. A voice can be monotonous even with some slight changes in pitch.]
decouple-uncouple [Both can mean "disconnect" or "separate" in a physical sense. Use "decouple" when you mean the figurative sense of eliminating an interrelationship. You would usually use "uncouple" when speaking of a railroad car.]
wind up- end up [These can both mean "end up"; of course, "wind up" also means to tighten a spring or rope by twisting it.
2. What prefix can be added to form the opposite word of Punctual? [The long list for "un" at http://m-w.com lists "unpunctual".]
3. What does sloan mean? [I know this only as a proper noun. I find a famous American painter named John Sloan. The Sloan Valve Company makes toilets and other items. These are 2 contexts where you may see "Sloan".]
4. I see these phrases quite often, but don't know what they mean:
Hasta la vista - This is a Spanish phrase used when 2 people part; it means something like, "Until we see each other again" or "So long."
Living la vida loca - Again, the last 3 words are Spanish. I think they mean, "the crazy/wild life".
5. Do we have to put since at the beginning of a sentence when it means "because"? For instance:
Since you're hard working. you'll pass the exam.
You'll pass the exam, since you're hard working.( Is this incorrect?)
-- Both of these sentences are correct. If you substituted "because" for "since", both of the resulting sentences would also be correct.