追问:2016/05/13 10:28

如果理解成一般的陈述句可以么？you做主语，遵循前肯后否的规律。

    【答】因为有Alice, 所以you feed the bird today是祈使句，而不是一般的陈述句。

例如，下面两个句子都是祈使句（摘自《牛津英语用法指南》第三版268.5节）：

You just sit down and relax for a bit . 你就坐下，休息一会儿吧。/ You take your hands off me ! 你把手拿开，别碰我！

    《牛津英语用法指南》第三版268.6节指出：“祈使句之后，一般疑问尾句的形式

为 will you? would you ? can you ? 及 could you ?”所以，下面这道题的答案只能是B. will you ：

—Alice, you feed the bird today, ________?

—But I fed it yesterday.

A. do you 

B. will you 

C. didn't you 

D. don't you

—Alice, you feed the bird today, ________?

—But I fed it yesterday.

A. do you

B. will you

C. didn't you

D. don't you

为什么A、D不行？谢谢

回答如下：

(1) 首先 A 是绝对不正确的，因为已经违反反意疑问句”前否后肯；前肯后否的”原则。

(2) 带有祈使语气的句子，后面一般采用will you? 带有祈使语气句子通常省略主语第2人称，Alice, Feed the bird today, will you?

(3) 省去主语的祈使句的反意疑问句，疑问部分用will you。

Go with me, will you？

Open the door, will you?

特别备注以下2点：

Let's开头的祈使句，后用shall we?

Let us开头的祈使句，后用will you?

Let's go and listen to the music, shall we?

Let us wait for you in the reading-room, will you?