给作文打分时，可以使用以下几种常见的英语表达方式：

使用评分量表

“how would you rate XXX？”

“on a scale of 1 to 10, how would you rate XXX？”

直接打分

“I would rate XXX a ten.”

“I would rate XXX an 8.”（例如，如果给作文打8分）

描述性评分

“The essay is well-written and clear, but it could benefit from more complex sentence structures. I would rate it a 7.”

“There are several grammatical errors and the vocabulary is limited. I would rate it a 4.”

这些表达方式可以帮助你更准确地传达对作文的评分。根据具体情况选择合适的表达，可以使你的评分更具体、更有说服力。