17. Every minute should be made full use of _________ the lessons.

A. to study               B. study                   C. studying              D. studied

【分析】此題容易誤選C，認(rèn)為介詞后接動(dòng)詞時(shí)要用動(dòng)名詞。其實(shí)此題的正確答案是A，注意此句謂語為被動(dòng)語態(tài)，假若將此句轉(zhuǎn)換成主動(dòng)語態(tài)，則是 We should make full use of every minute to study the lessons. 用的是 make use of … to do sth (利用……做某事)這一結(jié)構(gòu)。另外，還有 make the most of (盡量利用)，make the best of (盡量利用)也可能用于此類試題。請(qǐng)看類例：

The only way that she thought of _________ enough money was to sell her hair.

A. get                       B. to get                   C. got                       D. getting

答案應(yīng)選B，而不是選D。句子主語是 the only way，that she thought of 是修飾主語的定語從句，不定式 to get enough money 也是修飾主語的定語，也就是說，句子主語帶有兩個(gè)定語修飾語。全句意為“她想到的弄到足夠錢的惟一辦法就是把自己的頭發(fā)賣掉。”

18. The letter they were looking forward to _________ at last.

A. arrived                B. arriving  C. had arrived                     D. arrive

對(duì)于此題，基礎(chǔ)稍差的同學(xué)可能選D，認(rèn)為空格前的 to 是不定式符號(hào)，所以后接動(dòng)詞原形；基礎(chǔ)稍好的同學(xué)可能會(huì)選B，知道 look forward to 是短語，意為“盼望”，其中的 to 是介詞，而不是不定式符號(hào)，所以后接動(dòng)名詞；只有基礎(chǔ)扎實(shí)、語感好、而且細(xì)心的同學(xué)才會(huì)選A，誠(chéng)如上面所說，look forward to 中的 to 是介詞，而不是不定式符號(hào)，所以后接動(dòng)詞作賓語時(shí)，要用動(dòng)名詞，而不用動(dòng)詞原形。但問題是此句中的動(dòng)詞 arrive 不是介詞 to 的賓語，而是句子的謂語。句子的正解分析是：the letter 為句子主語，they were looking forward to 是修飾主語的定語從句(介詞 to 的賓語是引導(dǎo)該定語從句的關(guān)系代詞 that，被省略)，arrived 是句子謂語。請(qǐng)看以下試題：

(1) The professor you referred to _________ just now.

A. comes                  B. come                    C. coming                 D. came

答案選D，句子主語為 the professor，you referred to 為修飾 the professor 的定語從句，空白處填 came，為句子謂語。

(2) The theory he sticks to _________ to be of no use in our studies.

A. proves                  B. prove                   C. proving                D. be proved

答案選A，he sticks to 是修飾主語 the theory 的定語從句，句子的基本結(jié)構(gòu)為 The theory proves to be of no use in our studies.

(3) The work he devoted his time to _________ worth praising.

A. was                     B. be                        C. being                    D. been

答案選A，he devoted his time to 是修飾主語 the work 的定語從句。句子的基本結(jié)構(gòu)為 The work was worth praising.

19. This is the very work that I must finish _________ her.

A. to help                 B. help                     C. helping  D. helped

有的同學(xué)一看到動(dòng)詞 finish，便斷定其后空格肯定填動(dòng)名詞，即斷定此題答案選C。其實(shí)錯(cuò)了，正確答案應(yīng)是 A。不錯(cuò)，finish 后接動(dòng)詞作賓語時(shí)，該動(dòng)詞要用動(dòng)名詞，而不用不定式，但是本句空格處填的動(dòng)詞help 并不是 finish 的賓語，正確的句子分析是：that I must finish 是修飾名詞 the very work 的定語從句，finish 的賓語是引導(dǎo)該定語從句的關(guān)系代詞 that，其后的不定式 to help her 是目的狀語。全句意為“為了幫助她，這就是我們必須要完成的工作。”請(qǐng)?jiān)倏搭愃评�題：

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