英语does is区别用法?如,Dad isn not at home.为什么不是Dad does not at home.She does not come from China.为什么不是She is not come from China.(对了,come还用不用加s)

问题描述:

英语does is区别用法?
如,Dad isn not at home.为什么不是Dad does not at home.She does not come from China.为什么不是She is not come from China.(对了,come还用不用加s)

Dad isn not at home.是主---系---表,at home是介词短语作表语用is与Dad 联系.而She does not come from China.是主---谓---宾come 是行为动词用does not 否定.