A：Excuse me. Have you got any books on genetic engineering? I've looked for them everywhere,but I can't find any.打擾了。你們有基因工程的書嗎?我到處找，但是找不到。
    B：I'm not sure if we've got any now. Books of that kind are on this shelf. Well, I'm afraid we've sold out.我不確定我們現(xiàn)在是否有。那種書都在那個(gè)架子上。額，恐怕我們已經(jīng)賣光了。
    A：What a pity! I should have come earlier.好遺憾啊!我應(yīng)該早點(diǎn)來(lái)的。
    B：Come some time next week if you like. I think we'll have got some by then.如果你想要，下周找個(gè)時(shí)間過來(lái)吧。我想我們到時(shí)候會(huì)有的。
    A：Ok, I will.好的。我會(huì)的。