现在分词（PresentParticiple）(又称-ing形式)，是分词的一种，是非限定动词，即在句子里面不能单独充当谓语，但能充当其它的一些成分（定语，表语，补语和状语）。一般式：doing；一般被动式：being done；完成式：having done；完成被动式：having been done。所有否定式都是在－ing前面加not。
如：He was very amusing.
That book was rather boring.
很多动词的现在分词都可以作表语：exciting, interesting, encouraging, disappointing, confusing, touching, puzzling.
如：That must have been a terrifying experience.
I found him a charming person.
如：There are a few boys swimming in the river.
There is a car waiting outside.
如：Following Tom, we started to climb the mountain.
Opening the drawer, he took out a box.
Taking a key out of his pocket, he opened the door.
如：Not knowing her address, we couldn't get in touch with her.
Being unemployed, he hasn't got much money.
如：Hearing the news, they all jumped with joy.
Returning home, he began to do his homework.
Jim hurt his arm while playing tennis.
Be careful when crossing the road.
Having found a hotel, we looked for some where to have dinner.
Having finished her work, she went home.
例如：see, hear, catch, find, keep, have等。
如：I see him passing my house every day.
I caught him stealing things in that shop.
I smelt something burning.
She kept him working all day.
如：When we arrived, we found him sleeping. 我们到达时发现他在睡觉。
Living in the 示的动作也可略早于或迟于谓语动作，但两者之间没有时间间隔：
如：Seeing nobody at home, he decided to leave a note. 发现没有在家，他决定留个字条。
He went home, finding the door locked. 他回到家，发现门是锁着的。当现在分词所表示的动作略迟于谓语动作时，现在分词通常位于句末。
如：Having been there once, she knew the place quite well. 由于去过那儿一次，她对那地方很熟悉。
Having failed twice, he didn't want to try again. 他已经失败了两次，不想再试了。
如：Locking the door, he went out. 锁好门之后，他就出去了。
Having invited him here to speak, we'd better go to his lecture. 既然我们请了他来作报告，我们最好去听一下。
如：Having bought our tickets, we went into the theatre. 我们买好票后就走进剧场。
误：Do you know anyone having lost a cat? 你知道有谁丢了一只猫吗？
误：I want to talk to the person having broken the window. 我想同打破窗户的人谈谈。
误：I want to talk to the person breaking the window.
如：Who is the woman being operated on? 正在动手术的女人是谁?
I saw him being taken away by the police. 我看见他被警察带走。
如：Not having a car, he finds it difficult to get around. 由于没车，她感到行动很困难。
如：The subject having been opened, he had to go on with it. 话题已经开始了，他不得不谈下去。
Having been written inhaste, the book has many mistakes. 这书因写得仓促，所以错误不少。
比较：Being so ill, she can't go to school. 由于病得那么严重，她不能去上学。
Having been ill for a long time, he needed time to recover. 由于病了很长时间，他需要一段恢复的时间。
2.My pen friend, Susan, wrote to me, _____ the idea that she would come to Changch
3._____ how to pronounce the word, he stopped to look it up in a dictionary.[
4.—Come on, please give me some ideas about the project.—Sorry. With so much work
5.He got up late and hurried to his office, ________ the breakfast untouched.[
6.I looked up and noticed a snake ________its way up the tree to catch its breakfa
7."Genius" is a complicated concept, ________ many different factors. [ ]A
8.______in a long queue, we waited for the store to open to buy a New iPad.
9.Tony lent me the money, ________ that I'd do as much for him.[ ]A. hoping B
10.The old couple often take a walk after supper in the park with their pet dog ___