用比较级造句！谢谢帮忙！！！并翻译下意思！

1.
(原)Tom works very hard.
(比)Tom works harder than Jim.
(最)Tom is the most efforts to work in the class.
2.
(原)Tom's house is very far from here.
(比)Tom's house is further than Jim's house from here.
(最)Tom's house is the further from here.
3.
(原)Buy a car will cost much money.
(比)Buy a car will cost more(money) than buy a computer will cost.
(最)Buy a plane is the most expansive.
4.
(原)Tom spends much time in doing his homework.
(按你的句型没其它的了)
大哥加分啊。T T

1.
(原)Tom works very hard.
(比)Tom works harder than Jim.
(最)Tom is the most efforts to work in the class.
2.
(原)Tom's house is very far from here.
(比)Tom's house is further than Jim's house from here.
(最)Tom's house is the further from here.
3.
(原)Buy a car will cost much money.
(比)Buy a car will cost more(money) than buy a computer will cost.
(最)Buy a plan