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■ He had thousands of students, many of ______ gained great success in their own field.

A. whom                               B. them

C. which                               D. who

【易錯】容易誤選 B，用 them 代指 students。

【分析】最佳答案是A，many of whom gained great success in their own field 為非限制性定語從句。假若在many of… 的前面加上連詞and，則選答案B。比較以下各題(答案均選A)：

(1) He asked a lot of questions, none of ______ was easy to answer.

A. which                                 B. them

C. what                                   D. that

(2) He asked a lot of questions, and none of ______ was easy to answer.

A. them                                   B. which

C. what                                   D. that

(3) He told me that he had two girl-friends, neither of _______ knew anything about the other.

A. whom                                B. them

C. which                                D. who

(4) He told me that he had two girl-friends, and neither of _______ knew anything about the other.

A. them                                 B. whom

C. which                               D. who

■ He had a lot of friends, only a few of ______ invited to his wedding.

A. whom                               B. them

C. which                               D. who

【易錯】容易誤選 A，認為這是非限制性定語從句。

【分析】最佳答案是B，這不是非限制性定語從句，而是一個獨立主格結構，因為空格后的動詞 invited 并不是一個完整的謂語，而是一個過去分詞。當然，假若在 invited 前加上助動詞 were，則是一個非限制性定語從句，答案便應選A。比較：

(1) They put forward a lot of plans at the meeting, none of _______ carried out in their work.

A. which                                B. them

C. what                                  D. that

答案選B，none of them carried out in their work 是獨立主格結構，其中的 carried out 為過去分詞。

(2) They put forward a lot of plans at the meeting, none of _______ were carried out in their work.

A. which                                 B. them

C. what                                   D. that

答案選A，none of them were carried out in their work 是非限制性定語從句，注意與上例比較句中多了一個助動詞were。

(3) They put forward a lot of plans at the meeting, but none of _______ were carried out in their work.

A. which                                   B. them

C. what                                     D. that

答案選B，由于兩句之間增加了一個并列連詞but，使得該句成了一個并列句。

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