它们的区别主要表现在语态和时间关系上，即过去分词与宾语之间是被动关系，不及物动词的过去分词只表示动作的完成，现在分词与宾语之间是主动关系，不定式与宾语之间也是主动关系。过去分词形式常表示动作已经完成，而现在分词多表示动作正在进行，不定式强调动作发生的全过程。

　　We found the trees planted already.

　　We found many people planting trees there.

　　I saw him go into the dining room.

　　Ⅰ.单项填空

　　1．To learn English well，we should find opportunities to hear English ________ as much as we can.

　　A．speak B．speaking

　　C．spoken D．to speak

　　答案　C

　　解析　此处考查"hear＋宾语＋do/doing/done"结构。因为English是"被说"，故用spoken作宾补，表示被动。

　　2．Jenny hopes that Mr. Smith will suggest a good way to have her written English________in a short period.

　　A．improved B．improving

　　C．to improve D．improve

　　答案　A

　　解析　本题考查非谓语动词。have在此处为使役动词，表示"使，让"，后可接do，doing或done作宾补，宾语her written English与improve之间为动宾关系，故应用过去分词作宾补。

　　3．He is very popular among his students as he always tries to make them________in his lectures.

　　A．interested B．interesting

　　C．interest D．to interest

　　答案　A

　　解析　make them interested in中的them指代students，故用interested，表示"对......感兴趣"。

　　4．John received an invitation to dinner, and with his work ________， he gladly accepted it.

　　A．finished B．finishing

　　C．having finished D．was finished

　　答案　A

　　解析　在"with＋宾语＋宾补"结构中，宾补用过去分词表示完成。

　　5．Laws that punish parents for their little children's actions against laws get parents________.

A．worried B．to worry