SUSAN: Can't you come in and have tea
       now, Peter?
PETER: Not yet.
       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!
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.
       Look out of the window.
SUSAN: It's raining!
       That means
       You don't need to water
       the garden.
PERTR: That was a pleasant surprise.
       It means I can have tea,
       instead.

参考译文
苏珊：彼得，你现在能进来喝茶吗？
彼得：还不能。我得先给花园浇水。
苏珊：你一定得现在浇吗？
彼得：恐怕我得现在浇。你看看，干得厉害。
苏珊：真讨厌！
彼得：去年夏天也是干得很。
      你记得了吗？我不得不每天浇水。
苏珊：好吧，我一个喝茶了。
苏珊：好快啊！你已经浇完了？
彼得：是的。你看看窗外。
苏珊：下雨了，这就是就是说，
      你不必给花园浇水了。
彼得：这是意想不能的好事。
      这意味着我反倒可以喝茶了。