我经常犯错误。
I often make mistakes in grammar.
我常犯语法错误。
Yes. I often make mistakes in grammar.
他不时地犯语法错误。
New learners often make mistakes in grammar.
新学员常常犯语法错误。
They are such naughty boys that they often make mistakes.
他们是如此淘气以致于经常犯错误。
I often make mistakes in my homework because I am so careless.
我做作业经常出错，因为我太粗心。
Students often make mistakes in sentences of comparison. Here we consider and correct one such mistake.
在对比句型中，学生们也常出错，这必须加以重视并予以改正。
Students often make mistakes in sentences of comparison. Here we consider and correct one such mistake.
在对比句型中，学生们也常出错，这必须加以重视并予以改正。
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