I make mistakes in grammar.

在语法方面，我屡次出错。

youdao

I used to make mistakes in grammar.

我以前常在语法上出错。

youdao

I often make mistakes in grammar.

我常犯语法错误。

youdao

I always make mistakes in grammar.

我总是在语法是犯错误。

youdao

Yes. I often make mistakes in grammar.

他不时地犯语法错误。

youdao

Yes. I often make mistakes in grammar.

他不时地犯语法错误。

youdao