题目内容：

fail to do sth的同义词组是什么?
.别跟我说fail in doing sth啊.
he failed to catch the early bus this morning.(改为同义句)
He _____ ______ to catch the early bus this morning.

优质解答

很简单的
He was unable to catch the early bus this morning.
同义句转换训练的是理解句子和短语的基本能力,掌握关键词组意思和用法即可.