有這樣一道題：

Mrs Brown was much disappointed to see the washing machine she had had _________ went wrong again.

A. it B. it repaired C. repaired D. to be repaired

這是一道上海高考英語題，答案選C，許多考生因不能正確分析句子結(jié)構(gòu)，不知如何下筆。現(xiàn)分析如下：句中to see 后的基本結(jié)構(gòu)是：the washing machine went wrong again.(洗衣機(jī)又出毛病了)，其中 (that) she had had repaired 套用的句型是“have + 名詞或代詞 + 過去分詞”，即 have the washing machine repaired;另外，從時(shí)間上看，“請(qǐng)人修洗衣機(jī)”應(yīng)在“出故障”之前，故 have the washing machine repaired 用了過去完成時(shí)態(tài)，即用 had had the washing machine repaired;從修飾角度看，題目中she had had repaired 為修飾名詞 the washing machine 的定語從句(意為“她曾請(qǐng)人修理過的洗衣機(jī)”)，引導(dǎo)該定語從句的關(guān)系代詞為 that，因其用作賓語被省略，也正因?yàn)槿绱耍}目中的 she had had repaired 的第二個(gè)had 后既不能用 the washing machine 或 it，這也就是為什么不能選B的原因。如果有的同學(xué)還明白，我們可以從反面來分析一下：假若選B，則有 (that) she had had it repaired，而它作為修飾 the washing machine 的定語從句是有問題的，為什么有問題呢?那是因?yàn)?she had had it repaired 這個(gè)句子的結(jié)構(gòu)(或成分)是完整的，它有主語、有謂語、有賓語，這樣一來，引導(dǎo)這個(gè)定語從句的關(guān)系代詞 that 就沒有著落了，因?yàn)殛P(guān)系代詞 that 要么作主語(不可省略)，要么作賓語(可以省略)，而 she had had it repaired 這個(gè)定語從句既不缺主語，也不缺賓語，所以錯(cuò)了。假若去掉其中的 it，即改選C，則對(duì)了，因?yàn)檫@樣一來，that 可用作動(dòng)詞 repaired 的賓語。現(xiàn)在我們將此題改編一下，將其改為：

Mrs Brown was much disappointed to see the washing machine she had _________ went wrong again.

A. it B. it repaired C. repaired D. to be repaired

答案應(yīng)選哪個(gè)呢?選B還是C?仍然要選C，但是意思變了，即“她自己修理過的洗衣機(jī)又出故障了”，因?yàn)榇藭r(shí)修飾 the washing machine 的定語從句變成了 she had repaired。不能選B，道理同上。

請(qǐng)比較下面一題：

A computer does only what thinking people _________.

A. have it do B. have it done C. have done it D. having it done

答案選A，選項(xiàng)中的 it 指的是 the computer，而不是指 the work 之類的。其中的 what 用作動(dòng)詞 do 的賓語。句意為“人們要計(jì)算機(jī)做什么，它就做什么”。