(1)状语类别的判断不同的状语对非谓语动词的要求不同，目的状语要求用不定式，如②。

　　(2)非谓语动词与句子属于之间的逻辑关系根据主谓关系或动宾关系的不同来确定用现在分词还是用过去分词。

　　(3)非谓语动词的否定形式not否定非谓语动词时置于非谓语动词之前，如③。

　　(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：

　　①They are going to have the service man ____ an electric fan in the officetomorrow.(1998.1)A. install B. to install C. to be installed D. installed ②After a few rounds of talks, both sides regarded the territorydispute ______.(1998.6)A. being settled B. to be settled C. had settled D. as settled③You will see this product ____ wherever you go.(2000.6)A. to be advertised B. advertisedC. advertise D. advertising ④His remarks left me _____ about his real purpose.(1999.6)A. wondered B. wonder C. to wonder D. wondering⑤When I caught him ______ me I stopped buying things there and started dealingwith another shop.(1997.1)A. cheating B. cheat C. to cheat D. to be cheating ⑥The sale usually takes place outside the house, with theaudience _____ 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：

　　①The house was very quiet, ____ as it was on the side of themountain.(1999.6)A. isolated B. isolating C. being isolated D. having been isolated②These surveys indicate that many crimes go _____ by the police,mainly becausenot all victims report them.(2000.6)A. unrecorded B. to be unrecordedC. unrecording D. to have been unrecorded分词做表语可以做系动词be的表语，也可以做其它系动词的表语，如go, feel,seem, look, remain等等。这些系动词后非谓语动词的饿用法规则是相同的。

　　7) to作为介词与作为不定式符号的选择to可以是介词，也可以用来引导不定式，四级考试中对种类用法的考查也比较多。如：