1）work hard

1)i work hard to make a living.
i should work harder than before so that i can make a living.
he works hardest in our company.
2)he's very clever and will go far in this profession.
go far是大有作为的意思.怎么会有比较级.
3)the tv cost me so much money.
the tv cost much more money than that bike.
the tv cost most of my money.
4)i spend much time in playing.
i spend much more time in playing than in studying.
i spend most of time in playing.