彼は来ないだろうと思っていた。

Sentence Discussions Japanese
#1
English Translation

I thought he wouldn’t come.

How would you change this to say, “He thought (they) wouldn’t come”?

#2

@AgedDream8343
As you pointed out, the Japanese sentence can be interpreted as either

  1. He thought/assumed that (someone) wouldn’t come.
  2. I (or someone) thought/assumed that he wouldn’t come.

In order to avoid confusion, the first context had better be rephrased by 来ないだろうと彼は思っていた, and the second one be 彼は来ないだろうと私は思っていた.