I had 4 classes this morning .请改成否定句和一般疑问句.不理解的是`~否定句没有过去式，而一般疑问句却有过去式``都是这样的马？

I had 4 classes this morning一般疑问句改成had you 4 classes this morning?可以这样改不?还是必须改成Did you have 4 classes this morning? We had four classes this morning的一般疑问句 We had four classes this morning.（改一般疑问句） I had 4 classes this morning .请改成否定句和一般疑问句.不理解的是`~否定句没有过去式，而一般疑问句却有过去式``都是这样的马？ It was different from the music classes I had had before.为什么需要两个had 看图填词,完成下列短文 We had four classes this morning . After（） , my classmates and I went五．看图填词,完成下列短文 We had four classes this morning . After（） , my classmates and I went home （） happily . Not far this time i have had 根据局以及首字母填空 We had no classes this m____(1).All the students in our class went to visit theWe had no classes this m____(1).All the students in our class went to visit the History Museum.I went by bus and came back o__（2）foot.On I have had thousands of classes since I started school nine years ago. I’ve had enough this time. I had （ ）big breakfast ( )this morning i had something to eat this morning I had nothing to do with this I have had thousands of classes since I started school nine years ago完型阅读答案 用I have many classes a day.In the morning,I have 4 classes.造句30字 And This Is Nothing That I Thought I Had 歌词 I wish I had watched this movie 8 years ago. had classes的中文意思是什么?