Susan:   Can’t you come in and have tea now, Peter?

Peter:   Not yet, dear. I must water the garden first.

Susan:   Do you have to water it now?

Peter:   I’m afraid I must. Look at it!   It’s terribly dry.

Susan:   What a nuisance!（真讨厌）

Peter:   Last summer it was very dry, too. Don’t you remember? I had to water it every day.

Susan:   Well, I’ll have tea by myself.

Susan:   That was quick! Have you finished already?

Peter:   Yes, dear. Look out of the window.

Susan:   Good heaven! It’s raining. That means you needn’t water the garden.

Peter:   That was a pleasant surprise. It means I can have tea, instead.