输入错误句子
常见错误类型：
句型错误 动词形式错误 主语三单遗漏 否定式错误 疑问句错误 时态错误诊断结果
诊断结果将显示在这里...
常见错误示例
错误: He supposed to arrive at 8:00.
正确: He is supposed to arrive at 8:00.
诊断: 遗漏了be动词"is"。"be supposed to"是一个固定结构，不能省略be动词。
句型错误
错误: She is suppose to finish her homework.
正确: She is supposed to finish her homework.
诊断: "suppose"应该使用过去分词形式"supposed"。"be supposed to"是固定搭配。
动词形式错误