i could catch the ball怎么改成否定句?

I could not catch i could catch the ball怎么改成否定句? i should have been there,but i could not catch the bus I can catch the 英语保持原句意思.I got up early so that I could catch the train.I got up early____ ____ to catch the tarin. I had to get up early so that I could catch the first bus.I had to get up early _ _ _ I could catch the first bus.同义句转换, .He could hardly catch the train反义疑问句He could hardly catch the train,______ _____? 为了赶上火车我六点钟就出门了 I left 6:00 ___ I could catch the train. Hadn’t my car broken down,I _____ the train.选择哪一个?A、should have caught B、might catch C、could catch D、had caught I do hope u could catch up ur rest because u are very busy with the work.意思 I got up early in the morningin order to catch the first bus.(改为同义句)I got up early in the morning ______ ______ ______ I could catch the first bus. I don't catch your words 和I could't catch your words 那个对? my goodness,I just missed the train.that~stoo bad,but if you had hurried,you__it.为什么选could have caught而不选could catch. amanda got up c____so that she could catch the bus i got up early so that i could catch the early bus 句型转换i got up early ___ ___ ___ ___the early bus I had to get up early so that I could catch the first bus.改为同义句,为什么,请说出解析, why I have never catch the happiness i don't catch the weather