Question

"Our teacher have corrected our note books"in this sentence I can't spot the error

Answer 1

our teacher HAS corrected our notebooks. i think this might be it. or better you ask the teacher only

Answer 2

Sentence : Our teacher have corrected our note books.

Error in the sentence : Have

Correction of the sentence : has/had

Explanation : In the given sentence, it is said "teacher" which means there is a single teacher who is correcting the notebook.

Since "have" is the plural form of the verb, so it is incorrect to use it with a single teacher. Instead of have, we would use has/had here which satisfy the subject-verb agreement rule.

So, your correct sentence becomes -:

Our teacher has corrected our notebooks.

Or

Our teacher had corrected our notebooks.