The secret is to think in logical, coherent sentences, which most people don't do.
He seemed to understand a lot, but he couldn't write a coherent sentence.
One who could construct a coherent sentence without having to engage in a conference call with friends.
Like Bush, she can barely string together a coherent sentence.
Surprised and pleased that I could form a coherent sentence.
He tried to say something, but wasn't able to get a coherent sentence out.
It was the first coherent sentence Joe had heard the man utter.
I could hardly make a coherent sentence when he started to talk to me.
Believe it or not, the woman running communications can barely speak a coherent sentence.