better off to be in a better situation than before
- My friend would be better off if he sold his old car and bought a new one.
break down (something) to divide something into parts, to separate something into simpler substances
- We tried to break down the problem for further study. The sugar began to break down
soon after it was swallowed.
break up to separate, to divide into groups or pieces, to put an end to something
-Nobody wanted to break up their groups. We usually break up into small groups during our
class.
by the way incidentally
- “By the way, could you please bring your laptop computer tomorrow.”
carry out (something) to put something into action, to accomplish something, to do something
- The scientist wanted to carry out several experiments before discussing the new medicine.