getcha=get you
betcha= bet you
cya=see you
holda= hold up
sorta=sort of
goin'=going
lovi'=loving
wudya=would you
sup=what's up
'round=around
out of=outta
don't you=doncha
did you=dija
must have=must've
参考资料： http://www.davidtulga.com/contractions.htm

for更注重目的,表示有一方受益,to更注重指向.

Sort of 种类=kind of, 可以说，算是，有几分
A sum of money, some money
Main beef 最不满意，让人厌烦的

Nasty:
That's a nasty one to him .
He's a nasty piece of work.
He has a nasty illness.

Tighten the plastic cloth,or it will sag.
Tighten the rope,or it will loose.