吃透英语课本，提升在校竞争力
adj. 更困难的；“hard”的比较级
adv. 更努力地；hard的比较级
It made him work harder and become a better player.
这使他更加努力，成为一名更好的运动员。
Pinocchio swam faster and faster, and harder and harder.
皮诺乔越游越快，越游越猛。
They are even harder than the feet!
它们甚至比脚还硬！
They began to work harder than ever and more joyfully.
他们开始比以前更努力地、更快乐地工作。
The harder Tom tried to fasten his mind on his book, the more his ideas wandered.
汤姆越想专心读书，脑子里就越乱。
