I think I made some grammar mistakes.

Don't forget not to make grammar mistakes.

The player must rescue all the children on each level to get to the next one, which is done by fixing grammar mistakes in various scrolls.

The society sees a 'grammar mistake' in the later case.

Some reviewers also found fault with Crane's narrative style, grammar mistakes, and apparent lack of traditional plot.

Bueno had written songs since the age of ten, but he would not show them to his colleagues because of his grammar mistakes.

Ignore any typos and grammar mistakes, for the comment was typed on an iPad.

The book kicks off with an apparent spelling and grammar mistake on the cover ("She is the moeest of lovely English teacher in the world").

Frequent spelling and grammar mistakes, in the text, are used as a device to indicate the character's deficient education and cognitive difficulties.

I have underlined grammar mistakes in your writing for you to try to correct on your own.