14. __ time, he’ll make a first-class tennis player.
A. Having given B. To given
C. Giving D. Given
解析：本题产生错误的原因是搞不清楚give和he之间的关系而误选C或B。在非谓语动词中，对主句主语和从句动词之间的关系的判断是关键，搞清楚两者之间的关系是做题的关键所在。
本题考察能否在特定语境中正确使用非谓语动词形式的能力。本题的关键自傲与弄清非谓语动词与句子主语的逻辑关系：句子主语是该动作的执行者还是承受者？若是承受者，则需要用过去分词或其他形式的被动体。此处的过去分词短语Given time=if he is given time。全句句意是：给以时日，他一定会成为一流的网球手。最佳答案是D。
15. The Space Shuttle Columbia broke into pieces over Texas as it returned to the earth on February 1, 2003,_____ all seven astronauts aboard.
A. having killed B. killing C. being killed D. killed
解析：答案是B。 现在分词短语作结果状语
16. Don’t let me catch you ______.
A. do that again B. to do that again
C. doing that again D. done that again
解析：答案是C catch sb.doing sth.抓到某人做某事.固定用法,必须加ing
17. Everyone in our class was working hard and doing what we could ___ a good college.
A. enter B. to enter C. entering D. entered
解析：答案是B。此句是省略句，即在could后面省略了动词do，若把句子补充完整是Everyone in our class was working hard and doing what we could do to enter a good college.即句子中的不定式短语（to enter good college）是作为目的状语的，而不是与情态动词（could）一起构成谓语。
18. There are many kinds of metals ______.
A. each has its special properties B. one has its special properties
C.each having its special properties D. having its special properties
解析：答案是C 本句考察独立主格结构。D没有主语；逗号不能连接两个独立完整的句子，因此排除A，B；只能选C。句意为“金属有很多种，每一种都有它的特性。”
19. _____ it or not, his discovery has shocked everyone in scientific circles
A. Believe B. To believe C. Believing D. Believed
解析：答案是A。Believe it or not.常用于口语中,意为“信不信由你。”
20. He knows nothing about it, so he can’t help ___ any of your work.
A. doing B. to do C. being doing D. to be done
解析：错误的原因可能是上来就简单的根据can’t help doing sth(情不自禁的做某事)而误选A。
其实答案是B。请比较以下结构：
Can’t help to do sth 不能帮忙做某事
Can’t help doing sth 禁不住做某事；情不自禁的做某事
再看下面的例子，答案是B：
21. To tell you the truth, I’d rather read than watch television; the programs seem _____ all the time
A. to get worse B. to be getting worse
C. to have got worse D. getting worse
解析：答案是B。系动词seem后通常接不定式,由于有all the time,故用不定式的进行时。
22.She can’t help __ the house because she’s busy making a cake.
A. cleaning B. to clean C. cleaned D. being cleaned
解析：本句的意思是：她不能帮忙清理房子，因为她在忙着做蛋糕。
23.It’s pay-day, and they’re waiting ______.
A. for paying B. to be paid C. to be paying D. to have paid
解析：答案是B wait to do something的意思是“等着干某事”。动词不定式to pay和它的逻辑主语（也就是句子的主语）之间存在被动关系，并且动作是将来的，所以要用动词不定式的一般式的被动形式。所以B答案是正确的。C是动词不定式的进行式，表示和谓语动作同时发生的；D是动词不定式的完成式，表示动词不定时的动作发生在谓语动词之前。
24._______ trouble, I’m going to forget the whole affair.
A. Then rather cause B. Rather causing
C. Rather than cause D. Rather than caused
解析：答案是C rather than 后面可以跟任何形式，但前面的动词形式需保持一致，而rather than提前的时候只能用动词原形
25.Yesterday a street-beggar bought a lottery ticket purposelessly, _____ him a millionaire overnight.
A. making B. makes C. to make D. made
解析：答案是C。不定式作结果状语表示主语未曾预料到的结果。
26.While shopping, people sometimes can’t help __ into buying something they don’t really need.
A. to persuade B. persuaded
C. being persuaded D. be persuaded
解析：本题的答案是C。句中的can’t help是“禁不住”的意思（注意：根据句意用被动形式）
A. Having given B. To given
C. Giving D. Given
解析：本题产生错误的原因是搞不清楚give和he之间的关系而误选C或B。在非谓语动词中，对主句主语和从句动词之间的关系的判断是关键，搞清楚两者之间的关系是做题的关键所在。
本题考察能否在特定语境中正确使用非谓语动词形式的能力。本题的关键自傲与弄清非谓语动词与句子主语的逻辑关系：句子主语是该动作的执行者还是承受者？若是承受者，则需要用过去分词或其他形式的被动体。此处的过去分词短语Given time=if he is given time。全句句意是：给以时日，他一定会成为一流的网球手。最佳答案是D。
15. The Space Shuttle Columbia broke into pieces over Texas as it returned to the earth on February 1, 2003,_____ all seven astronauts aboard.
A. having killed B. killing C. being killed D. killed
解析：答案是B。 现在分词短语作结果状语
16. Don’t let me catch you ______.
A. do that again B. to do that again
C. doing that again D. done that again
解析：答案是C catch sb.doing sth.抓到某人做某事.固定用法,必须加ing
17. Everyone in our class was working hard and doing what we could ___ a good college.
A. enter B. to enter C. entering D. entered
解析：答案是B。此句是省略句，即在could后面省略了动词do，若把句子补充完整是Everyone in our class was working hard and doing what we could do to enter a good college.即句子中的不定式短语（to enter good college）是作为目的状语的，而不是与情态动词（could）一起构成谓语。
18. There are many kinds of metals ______.
A. each has its special properties B. one has its special properties
C.each having its special properties D. having its special properties
解析：答案是C 本句考察独立主格结构。D没有主语；逗号不能连接两个独立完整的句子，因此排除A，B；只能选C。句意为“金属有很多种，每一种都有它的特性。”
19. _____ it or not, his discovery has shocked everyone in scientific circles
A. Believe B. To believe C. Believing D. Believed
解析：答案是A。Believe it or not.常用于口语中,意为“信不信由你。”
20. He knows nothing about it, so he can’t help ___ any of your work.
A. doing B. to do C. being doing D. to be done
解析：错误的原因可能是上来就简单的根据can’t help doing sth(情不自禁的做某事)而误选A。
其实答案是B。请比较以下结构：
Can’t help to do sth 不能帮忙做某事
Can’t help doing sth 禁不住做某事；情不自禁的做某事
再看下面的例子，答案是B：
21. To tell you the truth, I’d rather read than watch television; the programs seem _____ all the time
A. to get worse B. to be getting worse
C. to have got worse D. getting worse
解析：答案是B。系动词seem后通常接不定式,由于有all the time,故用不定式的进行时。
22.She can’t help __ the house because she’s busy making a cake.
A. cleaning B. to clean C. cleaned D. being cleaned
解析：本句的意思是：她不能帮忙清理房子，因为她在忙着做蛋糕。
23.It’s pay-day, and they’re waiting ______.
A. for paying B. to be paid C. to be paying D. to have paid
解析：答案是B wait to do something的意思是“等着干某事”。动词不定式to pay和它的逻辑主语（也就是句子的主语）之间存在被动关系，并且动作是将来的，所以要用动词不定式的一般式的被动形式。所以B答案是正确的。C是动词不定式的进行式，表示和谓语动作同时发生的；D是动词不定式的完成式，表示动词不定时的动作发生在谓语动词之前。
24._______ trouble, I’m going to forget the whole affair.
A. Then rather cause B. Rather causing
C. Rather than cause D. Rather than caused
解析：答案是C rather than 后面可以跟任何形式，但前面的动词形式需保持一致，而rather than提前的时候只能用动词原形
25.Yesterday a street-beggar bought a lottery ticket purposelessly, _____ him a millionaire overnight.
A. making B. makes C. to make D. made
解析：答案是C。不定式作结果状语表示主语未曾预料到的结果。
26.While shopping, people sometimes can’t help __ into buying something they don’t really need.
A. to persuade B. persuaded
C. being persuaded D. be persuaded
解析：本题的答案是C。句中的can’t help是“禁不住”的意思（注意：根据句意用被动形式）
