不定式练习题答案讲解电子教案.doc

不定式练习题答案讲解

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1. Little Jim should love ________ to the theatre this evening.
　　A. to take B. to be taken C. to bring D. to be brought
　　2. Why not ________ going by boat for a change?
　　A. trying B. tried C. to try D. try
　　3. Charles Babbage is generally considered ________ the first computer.
　　A. to invent
　　B. having invented
　　C. to have invented
　　D. inventing
　　4. Today will be a busy day because I have a lot of work ________ .
　　A. to do B. to be done C. done D. being done
　　5. I really don't know ________ or to leave.
　　A. if to stay
　　B. if stay
　　C. whether to stay
　　D. whether stay
　　6. I've worked with children before, so I know ________ in my new job.
　　A. what expect
　　B. to expect what
　　C. expect what
　　D. what to expect
　　7. ________ late in the morning, Bob turned off the alarm.
　　A. Sleeping B. Sleep C. To sleep D. Having slept
　　8. Please find a room for us ________ this evening.
　　A. to stay B. staying C. staying in D. to stay in
　　9. It is nice ________ you to help me with my English.
　　A. of B. for C. with D. to
　　10. Hibernating animals (冬眠动物) have no choice but ________ down to sleep in winter.
　　A. lie B. lying C. to lie D. lay
　　11. I am determined to do what I can ________ my English.
　　A. improve B. raise C. to raise D. to improve
　　12. Tom kept quiet about the accident ________ lose his job.
　　A. so not as to B. so as not to C. so as to not D. not so as to
　　13. The boy's eyes need ________ with great care.
　　A. to examine B. examined C. to be examined D. to be examining
　　14. —Was the work difficult?
　　—Not at all. It was easy ________ .
　　A. to do B. to be done C. doing D. to have done
　　15. —Was he preparing for the exam yesterday evening?
　　—Yes, he's ________ it next month.
　　A. to give B. to take C. to make D. to do
　　参考答案与解析：
　　1. B。take带走(去)；bring带来。另外，主语Jim与动词take之间构成逻辑上的动宾关系。
　　2. D。考查固定句型“Why not do ...?”。
　　3. C。不定式所表示的动作在谓语动词所表示的动作之前发生，故应使用不定式的完成式。
　　4. A。不定式作定语时，既可以与其所修饰的名词或代词构成逻辑上的主谓关系，也可以与其所修饰的名词或代词构成逻辑上的动宾关系。当不定式的逻辑主语是句子的主语或谓语动词的宾语时，不定式应使用主动形式。
　　5. C。与不定式连用，并且要表达“是否”之意时，只能用whether，不能用if。
　　6. D。动词不定式作tell, show, know, decide, learn, teach, discuss等动词的宾语时，不定式前面可以带疑问代词、疑问副词或连词whether等，即：who, whom, what, which, when, where, why, how, whether等 + to do。
　　7. C。不定式作目的状语。
　　8. D。当不及物动词的不定式形式作定语，且该不定式与其所修饰的名词或代词构成逻辑上的动宾关系时，其后需使用必要的介词。例如：a river to swim in, a person to laugh at, nothing to worry about, a chair to sit in, a hotel to stay at, a pen to write with等等。
　　9. A。不定式的逻辑主语既可以用for sb.也可以用of sb.来表示。当形容词强调人的品质、特点时，要用of sb.。常见的这类形容词有：kind, nice, good, bad, polite, rude, wrong, right, clever, careless等。
　　10. C。but用作介词时，后面可接带to或不带to的不定式。除了短语can't help but do, can't choose but do, do … but do …之外，介词but后常跟带to的不定式。have no choice but to... 表示“除了……之外毫无选择；只好……”
　　11. D。考查不定式作目的状语。
　　12. B。so as to do或in order to do在句中作目的状语，其否定形式为so as not to do和in order not to do。
　　13. C。动词need后面的动词作其宾语，且与need的主语构成逻辑上的动宾关系时，need后面的动词可用doing或to be done两种形式。
　　14. A。动词不定式跟在某一形容词后作状语，且这个形容词用来说明主语的性质、品质、特征等时，不定式通常使用一般式，而不使用被动式。再如：
　　The box is too heavy to carry.
　　He finds English difficult to learn.
　　15. B。考查不定式作表语。“be+不定式”可用来表示将来。take an exam参加考试。
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