were是什么的过去式?has和had有什么区别
were是什么的过去式?has和had有什么区别
Had has were was的区别
had been invited 和were invited有什么区别?
had+过去式 have/has+过去分词有什么区别,都是什么时态?
一般过去式用来表示am is are的was和were有什么区别?
Have后面加动词过去式和Had后面加动词过去式有什么区别?
has lost和had lost有什么区别
what had happened和 what has happened有什么区别
has been和had been 有什么区别?
has bought和has had的区别
had been 和 has/have been的区别是什么?
法语中的未完成过去式和复合过去式有什么区别,各自的用法是什么?