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。