Problems
Very different or opposite to intended meaning! E.g. ‘I want to saw you every day.’
Problem with spelling or capitalisation, e.g. ‘Munday, tuesday’
Problem with punctuation, e.g. ‘I like, apples pears and bananas.
Wrong word order, e.g. ‘I you love.’ > ‘I love you.’
Missing word(s), e.g. ‘This flower _ beautiful.’
Extra word(s), e.g. ‘An elderly old man’
Right word but wrong form, e.g. ‘I loving you.’ > ‘I love you.’
Wrong word(s) (different meaning), e.g. ‘Humans have 10 fingers on their feet’ (‘fingers’ > ‘toes’) Word doesn’t fit with other word(s), e.g. ‘on June’ > ‘in June’
This word not in the dictionary! E.g. ‘speaked’
Problem with time, e.g. ‘I remembered it tomorrow.’
Problem with number, e.g. ‘one friends’
Meaning not clear: teacher is guessing, e.g. ‘Go because elephant.’ (? ‘Get out of the way because an elephant is coming.’)
Teacher cannot guess meaning, e.g. ‘Happily because now elephant.’
Improvement
There is a better word for what you wanted to say. E.g. ‘I’m looking ahead to seeing you.’ > ‘I’m looking forward to seeing you.’
There is a clearer or much simpler way to say this. E.g. ‘It is less difficult in my thinking than it was in the previous cases.’ > ‘It’s easier for me now.’
There is a more natural way to say this. E.g. ‘I have painfulness of the tooth.’ > ‘I have a toothache.’
There is a more conversational way to say this. E.g. ‘My physical condition has greatly improved.’ > ‘I’m much better now.’
Others
Perfect sentence!
Teacher’s comment
Better
Much better
Best
(X) Delete