谓语动词和非谓语动词的区别：
1) 谓语动词在句中可单独作谓语，而非谓语动词不能单独作谓语。
　 Miss Mary teaches us English.
　 玛丽教我们英语。（teaches 动词作谓语）
　 Mr.Victor came to our classroom to have a talk with us last week.
　 维克托先生上周来到了我们教室和我们谈话。（to have a talk....不定式 作状语）
2) 谓语动词受主语的人称和数的限制，而非谓语动词形式没有这种限制。
　 Larke likes the pop music.
　 拉克喜欢流行音乐。 （动词用单数第三人称形式）
　 Larke has nothing to do today.
拉克今天没什么事要做。（do 用原形）

非谓语动词的特征：
1 如果非谓语动词是及物动词，后面须跟宾语。
　Studying English is my favorite.
　学习英语是我的爱好。（studying 后跟宾语）
　To help him is my duty.
　帮助他是我的责任。（help 后跟宾语）
2 非谓语动词可以带有自己的状语或逻辑主语。
　Working under such a condition is terrible.
　在这样的环境下工作太可怕了。(under such a condition 是 working 的状语)
　It's too difficult for him to master English in such a short time.
　他在这么短的时间内掌握英语太难了。（for him 作不定式的逻辑主语）
3 非谓语动词仍有语态和时态的变化。
　I am sorry to have kept you waiting long.
　对不起让你久等了。（to have kept...是不定式的完成形式）
　Seen from the mountain, the city looks much more beautiful.
　从山上看，这座城市美丽多了。（Seen from...是分词的被动形式）
4 非谓语动词在句中可以当成名词或者形容词来使用。
　Our coming made him happy.
　我们的到来使他很高兴。（coming 起名词作用）
　There are two big swimming pools here.
　这儿有两个大型游泳池。(swimming 起形容词作用)

非谓语动词的形式变化：
1.不 定 式 主 动 被 动
　　一般 to write to be written
　　进行 to be writing
　　完成 to have written to have been written
　　完成进行 to have been writing
2.现 在 分 词 主 动 被 动
　　一般 writing being written
　　完成 having written having been written
　　过去分词一般 written
3.动 名 词 主 动 被 动
　　一般 writing being written
　　完成 having written having been written