新概念2第22课有什么时态

My daughter， Jane， never dreamed of receiving a letter from a girl of her own age in Holland. 

一般过去时

Last year， we were travelling across the Channel and Jane put a piece of paper with her name and address on it into a bottle. 

过去进行时，一般过去时

She threw the bottle into the sea. 

一般过去时

She never thought of it again， but ten months later， she received a letter from a girl in Holland.

一般过去时

Both girls write to each other regularly now. 

一般现在时

However， they have decided to use the post office.

现在完成时

Letters will cost a little more， but they will certainly travel faster.

一般将来时