請做以下類似題（答案均選A）：

(1) All the preparations for the project ______, we’re ready to start.

A. completed                                            B. have been completed

C. had been completed                               D. been completed

(2) Such _______ the case, I couldn’t help but______ him.

A. being, support                                      B. was, support 

C. has been, supporting                              D. is, to support

比較以下各題，答案選B，因為句中使用了并列連詞and：

(1) All the preparations for the project ______, and we’re ready to start.

A. completed                                            B. have been completed

C. had been completed                               D. been completed

(2) Such _______ the case, I couldn’t help but______ him.

A. being, support                                      B. was, support 

C. has been, supporting                              D. is, to support

4. The purpose of new technologies is to make life easier, ______ it more difficult.

A. not make                                              B. not to make

C. not making                                           D. do not make

【陷阱】容易誤選C，受題干中的逗號的影響，認為是現在分詞表結果的用法。

【分析】其實答案應選B，句中的逗號相當于連詞 and 或 but，not to make it more difficult 是對逗號前的不定式 to make life easier 的補充說明。此句的意思是“新技術的目的是為了使生活變得更容易，而不是使生活變得更困難”。兩個不定式同時用以說明句子主語 purpose 的內容。請做以下類似試題（答案選B）：

The purpose of the scheme is not to help the employers but _____ work for young people.

A. provide                                                B. to provide

C. providing                                             D. provided

5. The murderer was brought in, with his hands ______ behind his back.

A. to be tied                                             B. being tied

C. tied                                                      D. having tied

【陷阱】容易誤選B。

【分析】最佳答案為C。從意義上看，hands 與 tie 的關系應屬被動關系，故排除D。在A、B、C三個選項中，選項A比較容易排除，因為不定式表示將來意義，在此與語境不符。現將B和C作一比較：B為現在分詞的被動式，它表示兩層意義，一是表被動，二是表進行，也就是說 his hands being tied 的實際意思是“他的手正在被捆住”，這顯然與語境不符。而C為過去分詞，它也表示兩層意義，一是表被動，二是表示動詞的完成或完成后的狀態(tài)，此句中的 with his hands tied behind his back 可視為手被捆在背后的一種狀態(tài)。由此可知最佳答案為C。請看下面一題：

Anyone ______ trying to take knives on heard flights would be caught by the police.

A. finds                                                    B. found

C. being found                                          D. will find

答案選B而不選C，其中的過去分詞表示被動和完成。

比較下面兩題，最佳答案是D不是A，現在分詞的被動式表示被動和進行：

(1) The court hears about 120 cases a year; visitors are welcome to see a case ______.

A. argued                                                 B. to be argued

C. to be arguing                                        D. being argued

(2) The silence of the library was sometimes broken by an occasional cough or by the sound of pages _______.

A. turned                                                  B. having turned

C. to be turned                                          D. being turned

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