do did does 的用法与区别（do和does的用法口诀）

英语中do、does、did的用法是:一、这三个词在句子中都可以做助动词。但本身没有实际意义。它们只是帮助句子变成一般疑问句或者特殊疑问句。比如:Do you play football?Does he speak english?Did he finish his homework yesterday?二、他们在句中可以做行为动词。翻译为做。比如:I do a lot of things. she does well.they did homework.