I was very tired. I couldn’t keep up with them.我们可以改成：I was so tired that I couldn’t keep up with them.或：I was too tired to keep up with them.

这样一来，英语基础不是很好的学生只要能够写出最基本的句子，然后再对这些句子进行加工、改造、润色，慢慢的，就会让句子靓起来，在高考中就可以得到比较满意的成绩。

hxw.red