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【练习三十八】
改正以下的错误
1。＊Play tennis is fun。
2。＊I hate swim。
3。＊Stop talk about me。
4。＊In addition to read interesting books； you should also watch TV from time to time。
5。＊I am not interested in swim。
6。＊He talks about go to America。
7。＊I believe in do exercise every day。
8。＊The cost of transfer a student to another school is very high。
9。＊Please forgive me for make this mistake。
10。＊Swim keeps me from getting cold。
【练习三十九】
填充，每一个句子填入一个介词和一个动名词，先举一个例子。
1。 I am interested （listen） to music。
2。 Please forgive me （be） so late。
3。 In addition （study） ； you should also have some exercises every day。
4。 We talked （build） a house next year。
5。 Thank you （help） me。
6。 He is excited （travel） to Japan。
7。 I am looking forward （meet） you。
8。 He insists （talk） to me personally。
9。 I believe （exercise） every day。
10。 Did you participate that （swim） match。
11。 He was not used （listen） to classic music。
12。 My mother objected （visit） my aunt tomorrow。
13。 I am not accustomed （go） to bed so late。
14。 I am interested （swim） 。
15。 Are you responsible （write） this report？
16。 He is excited （see） me tomorrow。
17。 He is looking forward （see） that movie。
18。 I am not used （hear） that kind of noise。
19。 You should take advantage （have） such a good family。
20。He is in charge （send） students to other schools。
【练习四十】
将以下中文句子译成英文句子：
1。我不喜欢跳舞。
2。你对游泳有兴趣吗？
3。打蓝球是有趣的。
4。我们昨天谈到（talk about）教英文的事。
5。我不习惯（be not used to）抽烟。
6。我反对（object to）在公开场合哭泣（cry in public）。
7。除了游泳以外，他还应该打棒球（用in addition to）。
8。他可以（be capable of）每天跑一公里。
9。他负责（be in charge of）找寻一个好的地方。
10。我已习惯了（be accustomed to）早起。
9§3 不定式（Infinitives）
不定式＝to＋动词的原式。例如to go； to love； to eat等等，都是不定式，不定式和动名词的用法相似，以下全是用不定式用作名词的例子：
To love is to forgive。
To forgive your enemies will make you happy。
I like to eat chicken。
I asked my brother to e here。
He continued to read。
也许读者发现了不定式和动名词不同的地方：不定式不能用在介词的后面，以下的句子都是错的：
＊I am interested in to play piano。
＊He is worried about to go abroad。
＊I am in charge of to prepare for the party。
如何将不定式用成名词呢？
1。不定式可以用作主语：如
To play tennis is great fun。
To play safe in the stock market is necessary。
To be kind to others is important for every one。
To respect your parents shows good character。
2。不定式可以用成很多动词的宾语：
I like to swim。
He loves to listen to jokes。
My brother seems to be different。
I agree to lend him money。
Do you like to sing？
3。不定式可以跟在代词的后面，形式如下：
动词（verb）＋代词（pronoun）＋不定式（infinitive）
例如：
I told him to work hard。
I asked my brother to e back home。
He expects his friends to help him。
My teacher told me to wait for him。
I invited my sister to go to see a movie。
4。不定式常用在上述句子的被动语气中，例如：
He was told to work hard。
My brother was asked to e back home。
His friend is expected to help me。
I was told by my teacher to wait。
My sister was invited to go to see a movie。
以下是更多的不定式例子：
To give is more meaningful than to receive。
I love to swim in cold weather。
He agreed to listen to my story。
He decided to go anyway。
I told him to buy my book。
I invited him to e to my house。
I asked him to cook for me tonight。
Students are asked to work hard。
He needs to work hard。
I want you to send this letter to my father。
He requires every student to read one novel every week。
Every student is required to read one novel every week。
读者一定会问，是不是动名词可以和不定式互调，答案是否定的，有些动词后面可以跟动名词和不定式，但也有些动词，后面只能跟动名词，有些动词后面只能跟不定式。
有些动词后面可以跟动名词或不定式：love； like； hate； start； begin；以下的动词，后面只能跟动名词：
Enjoy I enjoy eating good food。
Appreciate I appreciate your being kind to others。
Avoid You should avoid making mistakes。
keep on Keep on working hard。
keep Keep singing。
consider He considered leaving home。
finish He finished writing this book。
suggest May I suggest drinking a cup of coffee？
discuss We discussed traveling to New Zealand。
以下的动词正好相反，只能跟不定式
agree I agree to sign this letter。
plan He plans to go away。
want They want to rent a car。
decide He decided to work hard。
seem He seems to be very happy。
appear He appears to be very sad。
一个字非常特殊，必须讨论一下，那就是stop：
stop smoking 指不再抽烟了
stop to smoke 指停下来，开始抽烟
9§4 动名词和不定式的被动和否定形式
将动词改成名词的时候，也可以有被动语气和否定语气，以下是一些例子：
Everyone likes to be loved。
This cup needs to be washed。
Being trusted is important。
I told him not to leave this house。
He asked me not to cry。
I was told not to fall asleep in class。
To be given a good gift on Christmas Eve makes me happy。
Being invited to that party is a great honor to me。
【练习四十一】
将下面的空格填入动名词或不定式
1。 I enjoy （listen） to rock and roll music。
2。 I asked him （go） away。
3。 He was asked （leave）。
4。 I suggest （have） some fun。
5。 He seems （be） a kind person。
6。 You appear （be） quite tired。
7。 I told him （have） a cup of wine。
8。 I invited him （e） over。
9。 Every one of you is required （work） hard。
10。 Do you like （swim）？
11。 I ordered him （read） my book。
12。 I was expected （write） a letter to you。
13。 He asked me （read） this letter to him。