以下的动词后面，不定词的后面都要省掉to。
动词 例句
let My mother let me watch TV tonight.
make He makes his students respect teachers.
have He had his sons clean their rooms.
see I saw him run away.
hear I heard the birds sing.
watch I watched the kids play.
notice I noticed her cry.
因为在这些动词的后面，本来应该用不定词，仅仅是to被省掉了，因此我们在这些动词的后面仍然要用原式，以下的句子都是错的：
*He made his son ran away from home.
*I saw him walked away..
*I have never heard him sang any song.
Help这一个动词非常特别，它后面的不定词中的to可省略也可不省，以下的句子都是对的：
I helped him wash his car.
I helped him to wash his car.
【练习四十三】
以下的句子都有错，请改正：
1.*He lets his son to drive his car.
2.*He made me felt happy.
3.*I made my friend to discuss his problem with me.
4.*I had my son to get up early every morning.
5.*I helped my father painted his house.
6.*I had my brother to carry this heavy luggage for me.
7.*I had Mary to marry me.
8.*This song makes everyone to cry.
9.*I helped Nancy worked hard.
10.*He made us to believe him.
11.*I saw him to play.
12.*I heard Mary sang several songs.
13.*I watched her to swim.
14.*I saw the birds to fly away.
第十章 如何将动词改成形容词
我们中文里，一个字有时是动词，有时却又可以用作形容词，最著名的例子是〝微笑老萧〞(萧万长院长的外号)〝微笑〞应该是动词，可是在这里，显然〝微笑〞是形容词。〝哭泣〞通常是动词，可是我们也可以说〝哭泣的孩子〞。也难怪我们常见到以下错误的英文句子：
* a smile face
* a run boy
需知smile和cry都是动词，是不能当作形容词来用的。
可是，更糟糕的是以下句子：〝住在台湾的人很有钱〞，我们很多人会说
* People live in Taiwan are rich.
以上的话为什么错呢?因为People是主词，are是动词，live in Taiwan形容people，可是live是一个动词，不能用作形容词的。怎么办呢?我们可以将一个动词用成一个形容词，我们的做法是利用分词(participle)和不定词(infinitive)，而分词有两种：现在分词(present participle)和过去分词(past participle)，我们在下一节，先谈现在分词的用法。
10§1 现在分词(present participle)作为形容词
任何一个动词，都有一个现在分词(present participle)，现在分词的形式是在动词后面加上ing，如：
laughing
crying
walking
swimming
running
以下的例子中，现在分词都是形容词
a crying baby
a smiling girl
an exciting story
running water
a running boy
a rising star
现在分词不一定放在名词的前面，在以下的句子中，现在分词都在名词的后面
a person walking in the woods
the young man running very fast
people living in Taiwan
the person driving that red car
the singer singing the national anthem(国歌)
the boys playing in the fields
the young boy swimming in the pool
以下句子中的现在分词，都被用作形容词。
We have a crying baby here.
Seeing is believing.(believing是形容词，seeing是名词)
Loving is forgiving.
He always wears a smiling face.
Running water is important for mankind.
Look at the rising sun.
The person swimming in that cold river is quite strong.
The young man driving the red car is rich.
Those boys playing basketball are happy.
This movie is exciting.
This news is very upsetting.
This story is troubling.
The young boy swimming in the pool is my brother.
People living in the United States consume more energy than other people.
The person painting the house there is from Mexico.
She has a loving husband.
He is a rising star.
