please help me to distinguish some ways of clarifying... "i mean" "in other words" "that is" "that is to say" how to use them correctly?

what's the difference between "möcheten" and"mögen"? Especially when they both mean "like". Thanks!

what is the difference between" in dark" and" in darkness"?

what's the difference between"east" and"eastern"? i am really confused about these similiar words. -__-||

What's the difference between"double"and"redouble";"relation"and"relationship"? @_@

"möchte" und "wollen"? two words have the same meaning"want".what is the difference between them?how can i use them correctly?thanks!

Wie spät is es? 1.Es ist fün vor halb sieben. 2.Es ist fün nach halb sieben. can you tell me how i can use "vor"and"nach"correctly in expressing time? thanks!

what are prefix "super-","pre-","micro-","bi-","inter-" mean?thanks!

a question about "Future Indefinite Tense"... what is the difference between "will do","be going to do" and "be about to do"? thanks a lot.among?-_-||