是反意问句还是省略句

请看下面一题，是考查反意疑问句还是考查省略句？

Many people have become rich by working hard, __________ you?

A. are                        B. have                        C. aren’t                         D. haven’t

此题应选B。容易误选C，D，误认为这是反意疑问句。其实这是一个省略句，补全为。如：

Many people have become rich by working hard; have you become rich by working hard too? 许多人通过勤劳致了富，你也通过勤劳致富了吗?

又如。如：

Many young people like the book. Do you? 许多年轻人喜欢这本书，你喜欢吗?

He will leave for Japan next week. Will you? 他下星期要去日本，你去吗?

We all want to attend the meeting; do you? 我们都想参加这次会议，你想参加吗?

以下各句情况也有些类例。如：

1. —I met Mr Smith last Sunday? 上个星期天我遇到史密斯先生了。

—Oh, did you? 哦，是吗?

2. —He has come back already? 他已经回来了?

—Oh, has he? 哦，是吗?

3. —Soon he will marry his cousin. 他不久将同他 表妹结婚。

—Oh, will he? 哦，是吗?

4. —Jim, why weren’t you telling the truth? 你为 什么不讲真话?

—But I was. 但我讲的是真话。