The seller demanded that payment should be made within five days. 卖方要求5日内付款。 2. whether / if引导 I don’t know whether he’ll arrive in time. 我不知道他是否能及时到。 I didn’t know whether they liked the place. 我不知道他们是否喜欢这个地方。 I’ll see whether I can induce him to accept it. 我要看看我是否能劝他接受。 I asked her whether she agreed. 我问她是否同意。 He enquired if her parents spoke Spanish. 他问她父母是否讲西班牙语。 I wonder if it’s large enough. 我不知道它是否够大。 She didn’t say if he was still alive. 她没说他是否还活着。 3. 连接代词引导 I don’t know who [whom] you mean. 我不知道你指谁。 Please tell me which you like. 告诉我你喜欢哪一个。 I’Il do whatever I can do. 我将做我所能做的事。 You can take whichever you like. 你爱拿哪个就拿哪个吧。 We’ll do whatever we can to save him. 我们将尽我们所能来挽救他。 Take whichever seat you like. 你要坐哪个座就坐哪个座位。 Give it to whoever you like. 你把它爱给谁就给谁。 You don’t know what you are talking about. 你在说什么，你自己也不知道。 Tomorrow at this time we’ll know who is elected. 明天这时候我们就会知道谁当选了。
