He bought a new book yesterday.
My father asked about my study yesterday.
I was ill yesterday.
One day, a fox met a dog.
This book cost me 5 dollars.
I stopped talking when the teacher came in.
I did my homework at nine o'clock yesterday.
I took my mother to my classroom last Monday.
I saw a plane when I went to school yesterday.
We saw a bird in the tree.
这些句子展示了不同的动词过去式在描述过去事件时的用法。希望这些例子能帮助你更好地理解和掌握英语动词的过去式。