(4) 独立成分

 　 有些非谓语动词的使用不受与句子主语关系的限制，称为独立成分，这类成 分只记忆即可。如:

     generally speaking, judging from..., to tell the truth..., 等。

     5) 做补足语的非谓语动词的选择

 　　做宾语补足语的非谓语动词受谓语动词的限制，不同动词后的宾语补足语形式要求不同。近几年对各类宾补都有考查。如：

     ① They are going to have the service man ____ an electric fan in the office tomorrow.(1998.1)

        A. install 　　           B. to install 　　

        C. to be installed 　   　D. installed

     ② After a few rounds of talks, both sides regarded the territory dispute ______.(1998.6)

        A. being settled 　     　B. to be settled 　　

        C. had settled 　       　D. as settled

     ③ You will see this product ____ wherever you go.(2000.6)

        A. to be advertised 　　   B. advertised 　　

        C. advertise 　　          D. advertising

     ④ His remarks left me _____ about his real purpose.(1999.6)

        A. wondered 　　           B. wonder 　　

        C. to wonder 　          　D. wondering

     ⑤ When I caught him ______ me I stopped buying things there and
started dealing with another shop.(1997.1)

        A. cheating 　　         B. cheat 　　

        C. to cheat          　　D. to be cheating

     ⑥ The sale usually takes place outside the house, with the
audience _____ on benches, chairs or boxes.(2000.1)

        A. having seated 　   　B. seating 　　

        C. seated　　           D. having been seated

    考查涉及到

    感官动词后的宾语补足语，如③。

    have, make, let, leave等特殊单词后的宾语补足语。

    regard类后面的宾语补足语

     with独立分句后面的

     常用动词后面的宾语补足语。

     6) 做表语的非谓语动词的选择

 　　表语的考查多侧重于分词做表语形式的选择，很少有动名词的用法的考查，虽然选项中有不定式作为干扰项，只要能看出是做表语的也就不用考虑。如：

      ① The house was very quiet, ____ as it was on the side of the
mountain.(1999.6)

         A. isolated 　　          B. isolating 　　

         C. being isolated 　    　D. having been isolated

      ② These surveys indicate that many crimes go _____ by the
police,mainly because not all victims report them.(2000.6)

         A. unrecorded 　        B. to be unrecorded 　　

         C. unrecording      　　D. to have been unrecorded