以下是英语语法填空的万能公式和答题口诀：
1. 主谓一致在英语语法中，主语和谓语要保持一致。
如果主语是第三人称单数，谓语动词要用单数形式；如果主语是复数，谓语动词要用复数形式。例如：* The dog barks loudly.(狗汪汪地叫)* The dogs bark loudly.(狗们汪汪地叫)1. 时态和语态英语中的时态和语态也是很重要的。时态表示动作发生的时间，语态则表示动作的被动或主动。在填写语法填空时，要注意时态和语态的正确使用。例如：* I have eaten breakfast.(我已经吃过早餐了)* I am eating breakfast now.(我正在吃早餐)* The cake was eaten by him.(蛋糕被他吃了)* The cake is being eaten by him.(蛋糕正在被他吃)1. 代词和冠词代词和冠词也是语法填空中经常出现的考点。代词用来代替名词，冠词则用来限定名词的范围。在填写语法填空时，要注意代词和冠词的正确使用。例如：* She gave me a book.(她给了我一本书)* She gave a book to me.(她把一本书给了我)* A book was given to me by her.(一本书被她给了我)* A book was given to me by her.(一本书被她送给了我)1. 从句和连接词从句和连接词也是语法填空中常见的考点。从句用来修饰主句或者作为主句的一部分，连接词则用来连接两个句子或者从句。在填写语法填空时，要注意从句和连接词的正确使用。例如：* I know that she is coming.(我知道她要来)* She said that she would come tomorrow.(她说她明天会来)* He doesn't know what to do next.(他不知道下一步该做什么)* I don't know what to do next either.(我也不知道下一步该怎么办)
