Be careful,there're many pitfalls.

    　　1.  On Sundays there were a lot of children playing in the park， _______ parents seated together joking.    A. their               B. whose
    C. which               D. that
2.　On Sundays there were a lot of children playing in the park,， _______ parents were seated together joking.    A. their               B. whose
    C. which               D. that
    3. On Sundays there were a lot of children playing in the park,， and _______ parents were seated together joking.
    A. their               B. whose
    C. which               D. that
4. On Sundays there were a lot of children playing in the park， _______ parents sitting together joking.
    A. their               B. whose
    C. which               D. that
1. 「陷阱」容易誤選B,，認(rèn)為這是非限制性定語從句,。
    「分析」最佳答案是A.與上面一題相似，their parents seated together joking 不是非限制性定語從句,，而是一個獨立主格結(jié)構(gòu),，因為空格后的動詞 seated 不是謂語,，而是一個過去分詞，因為 seat 作動詞用時,，是及物動詞,。
  2. 選B.whose parents were seated together joking 為非限制性定語從句，因為其后有完整的謂語 were seated.
  3. 選A.因為句中有并列連詞and,，整個句子為并列句,。
4. 選A.their parents sitting together joking 為獨立主格結(jié)構(gòu)。
1.  He had a lot of friends,， only a few of ______ invited to his wedding.    A. whom               B. them
    C. which              D. who
2.　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
3 .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
4 .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
1. 「陷阱」容易誤選 A,，認(rèn)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(jié)構(gòu)，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(dāng)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(yīng)選A.            
  2. 答案選B，none of them carried out in their work 是獨立主格結(jié)構(gòu),，其中的 carried out 為過去分詞,。     
  3.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.4. 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,。
4.A
1.  He had thousands of students,， many of ______ gained great success in their own field.    A. whom                B. them
    C. which               D. who
2.　He asked a lot of questions， none of ______ was easy to answer.    A. which              B. them
    C. what               D. that
3 .He asked a lot of questions,， and none of ______ was easy to answer.
    A. them               B. which
    C. what               D. that
4 .He told me that he had two girl-friends,， neither of _______ knew anything about the other.
    A. whom               B. them
    C. which              D. who
5. 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
1. 「陷阱」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.
              2. 答案為A,，            
  3.A  
4.A
5.A