"I thought that he was probably wrong" or "I thought he was probably wrong" which one is correct?

  • What effort have you yourself made to find out the answer? For example, have you looked at the huge amount of resources on the Internet?
    – BillJ
    Nov 6, 2018 at 9:19
  • Yes, I did. But I couldn't find my answer.
    – AR AM
    Nov 6, 2018 at 9:30
  • Here's a link that you may find helpful link
    – BillJ
    Nov 6, 2018 at 9:35
  • Here is Iran and many sites including BBC are filtered. I am trying to break the filter. It is not very easy sometimes. I should do that to read your link. any way thank you for your reply.
    – AR AM
    Nov 6, 2018 at 9:45
  • I read the link but I could not find my answer there.
    – AR AM
    Nov 6, 2018 at 9:52

1 Answer 1


From additional comments currently below your question, you are right that I thought he seems more common than I thought that he.

Thought "that" NGram.

This is from Google Books NGram Viewer. It shows the frequency of words in books that it tracks. (But note that it doesn't track verbal or conversational use of words.)

So, in terms of usage, you could say that the former is more idiomatic. (Again, if just considering printed material.) It also explains why your searches would turn up more instances of one versus the other.

But there are many words and constructions that are seldom used that are still grammatical—even if they aren't as common.

In terms of actual grammar in this case, both sentences are fine.

Many people think it sounds more natural to drop that as much as possible. In other words, they think it's a filler word that is used too often. That may or may not be true (it's a matter of style and opinion), but the use of that is still grammatical—even if its not always used.

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