trip is definition for travelling from point a to point b. it also means fall over. one word can have more then one meaning
she is going on a trip = elle part en voyage
¡Buen viaje! (Have a nice trip!)
That will depend on how long you think the trip you are going on is going to take. So you could say something like "About 3 weeks."
Well, probably because you don't want to miss something. Something... important. Say, for example, you were going on a field trip.. The bus leaves at 9 and you come 10 minutes late. You just missed the bus. I hope I helped, try to be on time.
say sex on a bus
vous partez en voyage
"un autobus" (masc) is the French noun for a bus (they do also say "bus")
"I have a trip" isn't completely wrong, but I cannot think of a situation in which "I am going on a trip" would not be at least as good a phrasing and probably a better one.
was is used with singular subjects, were with plural subjects. (There is no reasoning involved).
bus
Not sure which trip you're talking about here, but I'm going to out on a limb and say The Mayflower Compact.
It is proper to say 'take a trip': We plan to take a trip to Africa in January.