The box is so heavy that he could catch the first bus

箱子太重没赶上第一班公共汽车.

简单句:he can't catch the first bus.

The box is so heavy that he could catch the first bus.此句话有语病，应该改could为couldn't译为箱子太重所以他没赶上第一班公共汽车.

简单句The box is too heavy for him to catch the first bus.
too...to....表示太。。。而不能。。。。

盒子是如此沉重，他可以赶上首班车