不定式练习

请选出最适当的答案填入空格内，以使句子完整。

1.Not wishing to attend the dance, Marie A that she had a fever.
(A) made believed
(B) make believe
(C) makes believe
(D) made believe

made是使役动词，后边接单词原型，“had”表示事情已经过去

若make believe二字连用时即表示“假装”，已成为常用的短语

2.He is said by his friends C.
(A) to be gentle and gracious
(B) to have graciousness and gentle
(C) gentle and a gracious man
(D) that is a gentle and gracious man

is said暗示并不明确，所以用不定式

连接词and，其左右要对称

3.A any aspect of animal behavior, the biologist must first determine the laws influencing animal behavior.
(A) Explain
(B) To explain
(C) One explains
(D) The explanation of

B的不定词短语是修饰语的性质，可以附在独立从句上而不影响它的句型

4.”I’ll help you whenever you need me.”
“good. I’d like C me tomorrow.”
(A) you helping
(B) that will help
(C) you to help
(D) that you help

5.“Where did he go?”

“He went to another store B .”
(A) to buy slacks
(B) for buy slacks
(C) buy slacks
(D) buying slacks

in order to buy slacks

“去买裤子”是说明动机或目的

B中以动词buy置于介系词之后，语法错误

6.C the silkworm makes a liquid in its body and then squeezes it out through special holes.
(A) It makes silk
(B) Making silk
(C) To make silk,
(D) Silk is made by

空格后的部分是个独立从句

in order to make silk

7.I am a peaceful person. Don’t make me C violence.
(A) use
(B) using
(C) to use
(D) used by

make是使役动词

8.Americans B bacon and eggs for breakfast every day.
(A) used to having
(B) are used to have
(C) are used to having
(D) used to

are used 表示“习惯了”，后面的to是介系词，意为“对”某事习惯了。既是介系词，就要有名词作宾语，故选C。如果用used to，可视为助动词看待，表示“从前常常”

9.The bus driver told the man C his naughty son to hang out the window.
(A) to don’t allow
(B) not to allow
(C) not allowing
(D) don’t allowing

told the man 在此是“叫别人去做……”之意，含有要求的味道，也就是 The driver said to the man that he should…之意，因此后面应用不定词

10.To get an education, B .
(A) one must work hard
(B) working hard is necessary
(C) there is need to work hard
(D) hard work is needed

to get an education 是 so that (或 in order that) one can get an education 的意思，所以后面的主要从句应用one作主语

11.The purpose of the investigation is C the suspect’s degree of involvement in the crime.
(A) to ascertaining
(B) ascertaining
(C) to ascertain
(D) ascertained

主语the purpose是“目的”，而be动词后面的空格是主语补语位置，也就表示目的，所以要用不定词短语to (代表in order to) ascertain (想确定一下）。

12.The witness went on the witness stand ____ by the prosecution.
(A) being questioned
(B) to question
(C) to be questioned
(D) questioning

by the prosecution (被检方)，表示要用被动态，也就是A和C。而being questioned 意为“正在被质询”，和前面的went on the witness stand (走上证人台）有冲突，应用不定词，表示“走上台后才要”被质询

13.You can playback the answering machine. She A.
(A) will call
(B) could call
(C) could have called
(D) is calling

playback 是“播放”，带子上有声音才能播，所以下文应是“她可能来过电话了”，表示对过去的猜测，要用助动词加完成式

14.C able to write an academic paper, you must do a lot of library research.
(A) Be
(B) Being
(C) To be
(D) Before

从下文的you must。这个条件来看，前面表示的应是一个“目的”，也就是 in order to，所以用不定词。

15.You should avoid A vague words in your composition.
(A) to use
(B) using
(C) the use
(D) to using

avoid 有强烈否定意味，与暗示be going to 的不定词冲突，故用动名词。

16.He is waiting at the restaurant for a free table because he forgot B a reservation in advance.
(A) making
(B) to make
(C) made
(D) have to make

从上下文看得出来他事先该订位却忘了，所以要用不定词 forgot to make，意既 He forgot that he should make…

17.We can go out now.It stopped B quite a while ago.
(A) rain
(B) raining
(C) to rain
(D) rained

raining 有持续的暗示，stopped raining表示先前一直在下雨，后来停了。

18.He always has his shoes C at the railway station.
(A) shone
(B) to shine
(C) shining
(D) shined

His shoes are shined…(他的鞋在…给人擦)

把主语shoes改成宾语，补语shined改成宾语补语

19.Don’t sit up too late, for night is a time B .
(A) resting
(B) to rest
(C) that rests
(D) when rest

to rest是when you should rest 的变化

20.He was made A the Bible every night before going to bed.
(A) read
(B) to read
(C) reading
(D) reads

make虽是使役动词，要用原形动词作补语，可是在被动态中就得把to放回去，成为不定词