I had a busy weekend 中had为什么不变成have?

I had a busy weekend 中had为什么不变成have? I had no a busy weekend ＝ I didn't have a busy weekend 为什么? I had no a busy weekend ＝ I didn't have busy weekend 为什么? i had a busy weekend?为什么用had I had a busy weekend.能用spend替换had吗? Tom was grateful tohim（变成否定句)I had a busy weekend（变成疑问句） Jenny had a busy weekend I had a busy weekend写一篇英语作文. I had a busy last weekend.这句话对吗? i had a (busy) weekend对括号里提问 I had a busy weekend.的同义句 I had a busy weekend的同义句