第1个回答 2011-01-14
There are many grammatical errors/mistakes
第2个回答 2011-01-17
There are many grammatical mistakes.
or
There are many mistakes in grammar.
第3个回答 2011-01-18
There are many grammatical errors in this article.
第4个回答 2011-01-15
There are many grammatical mistakes
第5个回答 2011-01-14
havd many faults in gramma.