動(dòng)詞不定式在句子中可以用作賓語(yǔ)補(bǔ)足語(yǔ)，高中范圍內(nèi)，常用的“動(dòng)詞+賓語(yǔ)+不定式”的句子結(jié)構(gòu)中。不定式作賓語(yǔ)補(bǔ)足語(yǔ)的有以下八種類型：(下列句子中劃線部分作賓語(yǔ)補(bǔ)足語(yǔ))
一、許多動(dòng)詞可跟一個(gè)賓語(yǔ) + to do…構(gòu)成句子，句中的不定式作賓語(yǔ)補(bǔ)足語(yǔ);否定形式為“動(dòng)詞+賓語(yǔ)+not to do…”。例如：
My boss told me to type out two letters.
分析：句中“My boss”做主語(yǔ)，“told”作謂語(yǔ)，“me”作賓語(yǔ)，劃線部分作賓語(yǔ)補(bǔ)足語(yǔ)。請(qǐng)看下面的句子。
They forbade her to leave the country.
Please remind me not to be late for the meeting.
高中范圍內(nèi)，適用于“動(dòng)詞+賓語(yǔ)+(not)to do…”的結(jié)構(gòu)，不定式作賓語(yǔ)補(bǔ)足語(yǔ)的動(dòng)詞有：advise，allow，ask，beg，cause，direct，encourage，expect，forbid，force，invite，order，permit，persuade，remind，re- quest，require，teach，tell，want，warn等。
二、有些動(dòng)詞可跟“賓語(yǔ)+to be…”構(gòu)成句子，句中的不定式作賓語(yǔ)補(bǔ)足語(yǔ)。例如：
I consider him to be the best candidate.
分析：句中“I”做主語(yǔ)，“consider”作謂語(yǔ)，“him”作賓語(yǔ)，劃線部分作賓語(yǔ)補(bǔ)足語(yǔ)。請(qǐng)看下面的句子。
I know him to be a liar.
I suppose him to be away from home.
高中范圍內(nèi)，適用于“動(dòng)詞+賓語(yǔ)+to be…”的結(jié)構(gòu)，不定式作賓語(yǔ)補(bǔ)足語(yǔ)的動(dòng)詞有：consider，declare，discover，feel，find，suppose等。
三、有些動(dòng)詞(感官動(dòng)詞和使動(dòng)詞)后可跟不帶to的不定式構(gòu)成句子，句中的不定式作賓語(yǔ)補(bǔ)足語(yǔ)。例如：
He saw her enter the room.
分析：句中“He”做主語(yǔ)，“saw”作謂語(yǔ)，“her”作賓語(yǔ)，劃線部分作賓語(yǔ)補(bǔ)足語(yǔ)。請(qǐng)看下面的句子。
She won’t let me do it.
I heard her lock the door.
We watched the children play games.
高中范圍內(nèi)，適用于“動(dòng)詞+賓語(yǔ)+do…”的結(jié)構(gòu)，不定式作賓語(yǔ)補(bǔ)足語(yǔ)的動(dòng)詞有：feel，have，hear，let，make，notice，observe，see，watch等。還有兩個(gè)詞組：listen to，look at.
注意:這類句子變?yōu)楸粍?dòng)結(jié)構(gòu)時(shí)，不定式前加to。請(qǐng)看下列句子，句中劃線部分作賓語(yǔ)補(bǔ)足語(yǔ)。例如：
A child was seen to enter the building.
She was often heard to sing this song.
四、help后的不定式可加to，也可不加to(美國(guó)人不加to時(shí)較多)，但被動(dòng)結(jié)構(gòu)中要加to。例如：
I’ll help you(to) push the cart.
分析：句中“I”做主語(yǔ)，“will help”作謂語(yǔ)，“you”作賓語(yǔ)，劃線部分作賓語(yǔ)補(bǔ)足語(yǔ)。
上句的被動(dòng)語(yǔ)態(tài)為：You’ll be helped to push the cart.
五、有些“動(dòng)詞+介詞”的結(jié)構(gòu)后也可跟不定式構(gòu)成句子，句中的不定式作賓語(yǔ)補(bǔ)足語(yǔ)。例如：
He shouted to me to come over.
分析：句中“He”做主語(yǔ)，“shouted”作謂語(yǔ)，“to”為介詞，“me”作賓語(yǔ)，劃線部分作賓語(yǔ)補(bǔ)足語(yǔ)。請(qǐng)看下列句子，句子的結(jié)構(gòu)為“動(dòng)詞+介詞+賓語(yǔ)+to do…”，劃線部分為不定式，作賓語(yǔ)補(bǔ)足語(yǔ)。請(qǐng)看下面的句子。
I depend on you to do it.
I am counting on you to help me through.
高中范圍內(nèi)，適用于“動(dòng)詞+介詞+賓語(yǔ)+to do…”的結(jié)構(gòu)，不定式作賓語(yǔ)補(bǔ)足語(yǔ)的動(dòng)詞有：shout to sb.to do，call on sb. to do，count on sb. to do，depend on sb. to do，wait for sb. to do等。
六、作賓語(yǔ)補(bǔ)足語(yǔ)的不定式，表示的動(dòng)作在謂語(yǔ)所表示情況之前發(fā)生，就需要用完成形式：
He was known to have worked for the International Olympic Committee.
分析：句中“He”做主語(yǔ)，“was known”作謂語(yǔ)，使用了被動(dòng)語(yǔ)態(tài)。由句意可知，“為國(guó)際奧委會(huì)工作”發(fā)生在前，“大家知道”發(fā)生在后。故不定式部分用完成形式，在句中作賓語(yǔ)補(bǔ)足語(yǔ)。請(qǐng)看下面的句子。
They are believed to have discussed the problem.
七、作賓語(yǔ)補(bǔ)足語(yǔ)的不定式，表示一個(gè)正在進(jìn)行的動(dòng)作時(shí)需用進(jìn)行形式：
He is believed to be living in Mexico.
分析：句中“He”做主語(yǔ)，“isbelieved”作謂語(yǔ)，使用了被動(dòng)語(yǔ)態(tài)。由于句子表達(dá)主語(yǔ)現(xiàn)在正在發(fā)生的情況，故用不定式的進(jìn)行形式，句中劃線部分作賓語(yǔ)補(bǔ)足語(yǔ)。請(qǐng)看下列句子。
Thousands were reported to be working in concentration camps.
He is thought to be hiding in the woods.
間或不定式作賓語(yǔ)補(bǔ)足語(yǔ)也可用于完成進(jìn)行時(shí)。例如：
She is said to have been doing this work for twenty years.
八、不定式作賓語(yǔ)補(bǔ)足語(yǔ)的被動(dòng)形式：
he didn’t want her son to be taken away.
分析：句中“She”做主語(yǔ)，“didn’t want”作謂語(yǔ)，“her son”作賓語(yǔ)，由于“her son”與“take away”之間為被動(dòng)關(guān)系，故用被動(dòng)形式，句中劃線部分作賓語(yǔ)補(bǔ)足語(yǔ)。請(qǐng)看下列句子。
I’d like this room to be redecorated.
He didn’t wish the subject to be mentioned in the letter.
■練習(xí)：
1.They knew her very well.They had seen her ___ up from childhood.(1988全國(guó))
A.grow B.grew C.was growing D.to grow
2.The teacher asked us ___ so much noise.(2003北京)
A.don’t make B.not make C.not making D.not to make
3.My advisor encouraged ___ a summer course to improve my writing skills.(2004北京)
A.for me taking B.me taking C.for me to take D.me to take
4.The flu is believed ___ by viruses that like to reproduce in the cells inside the human nose and throat.(2004上海)
A.causing B.being caused C.to be caused D.to have caused
5.-Is Bob still performing?
-I’m afraid not.He is said ___ the stage already as he has become an official.(2005江蘇)
A.to have left B.to leave C.to have been left D.to be left
6.The mother felt herself ___ cold and her hands trembled as she read the letter from the battlefield.(2006上海)
A.grow B.grown C.to grow D.to have grown
7.Energy drinks are not allowed ___ in Australia but are brought in from New Zealand.(2006上海)
A.to make B.to be made C.to have been made D.to be making
答案：
1.A 2.D 3.D 4.C 5.A 6.A 7.B
